Earth Bites

4/4/2018

In EarthBites today we made humous and and planted some seedlings in the garden. Our garden theme is ugly vegetables so we will see what happens as our plants grow. In the afternoon we stared badminton in PE and graphed our first linear equation in Math. Tomorrow students will have a chance to give input into what novel they wish to start with in or Novel Approach Book Clubs. Think about the novels this evening and organize your top 5 pics.

1. Reminders and Homework:

Field trip to Reel 2 Reel film festival next Thursday April 12th
Bring your form and fee tomorrow (there will be a prize if we get 100% turned in)
Hand in March Home Reading
Graph the following linear equation: 3x-5=Y

2. Post A Response:

Online Graphing Calculator (live link)
Go to the above site and type in the linear equation above
What happens when you change the -5 to a different number? try several different numbers. Try changing the subtraction sign to an addition sign. What does changing this number or the operation do to the graph?
Now try changing the coefficient (the number in front of the variable X). Try several different numbers both positive and negative. What does changing this number do to the graph?
Post your findings
Play on the site a bit and try using exponents!

Challenge Question: Will the growth over time of the seedlings we planted today be a linear relation. Could you graph it with a linear equation? For example X value is days and Y value is height.

Miikka

4/4/2018 05:08:22 pm

FIRST

Emily

4/4/2018 05:10:06 pm

SECOND

4/4/2018 05:17:01 pm

When you change the value or number (so replace 5) it changes where the line intersects with the y axis. If the sign before the number is an addition sign, it represents positive, and the subtraction sign, negative. So if it is 3x-8, the line would intersect with the y axis at the point (0,-8).
If the equation were 3x+3, the line would intersect with the y axis at the point (0,3).

Mr Fisher

4/4/2018 06:13:45 pm

What about when you change the coefficient?

4/4/2018 07:43:30 pm

@Mr.Fisher-Sorry, I did the first bit in a rush, I had to run out the door to get to dance. :)

If the coefficient is positive, the line will start in quadrant one and move into quadrant three whereas if the coefficient is negative, the line will start in quadrant two and move into quadrant four. On the positive side, the larger the value of the coefficient, the less sloped the line is. However on the negative side, the smaller the value of the coefficient, the less sloped the line is.

4/4/2018 08:20:17 pm

Challenge question:
In a math question, I'm pretty sure that yes, plant growth could be graphed. If the plant grows 5cm every day, the equation would be 5x=y.

But in reality, it's not berry reliable to assume that a plant will grow the same amount every single day. Unless it's an experiment run by scientists in a controlled environment. Then I guess maybe.

LAWRENCE

4/4/2018 05:12:20 pm

THIRD

Kaya

4/4/2018 05:13:06 pm

fourth

fifth

4/4/2018 05:19:23 pm

Coco

unknown

4/4/2018 06:28:44 pm

I don't think coco is a letter, fifth

4/4/2018 08:49:11 pm

if you change -5 to a different number, depending on the value of that number, the dots will either become further or closer to the centre.

If you change the operation to addition, the dots will be have larger gaps in between them.

Increasing the coefficient will cause the line to become closer to the y axis, decreasing it will cause the line to get closer to the x axis.

4/4/2018 05:19:49 pm

When you change the -5 to a different number, the dots get closer and closer together until they meet in the middle when you put in the 0.

When you change the operation to addition, the dots get farther and farther apart. It like a coincidence because +/- are opposites and closer/farther are opposites.

Changing the coefficient to increase it puts the line closer to the y axis. If you decrease it it gets closer to the x axis.

Mr. Fisher

4/4/2018 06:19:02 pm

Well stated Miikka!

Eric N

4/4/2018 05:32:02 pm

Mr.Fisher can you put this week's word work in the website?

4/4/2018 06:16:31 pm

They should been on your fresh grade portfolio!

Jordan

4/4/2018 06:30:54 pm

Here use this
https://quizlet.com/283539908/word-work-22-flash-cards/

4/4/2018 05:40:56 pm

The point where the line meets the Y axis is -5, matching the equation. If you were to change the -5 to -6 for example, the line would meet the Y axis at -6 instead of -5. If you changed -5 to +5, the line would be at +5. The larger the number in the place of 3, the more vertical the line is.

4/4/2018 06:44:30 pm

Use the language: slope. greater slope? or less slope?

4/4/2018 08:50:33 pm

WHoops sorry

4/4/2018 05:51:29 pm

If you change the number, which in this case is -5. It will change the intersection between negative and positive. It will also changed the amount/space separating the dots from each other. So when you change it to a positive sign it adds more space between them all.

4/4/2018 06:18:29 pm

This is a little hard to understand. Use the language: where the line intersects the x or y axis or it changes the slope of the line etc.

Can you revise this?

4/4/2018 06:21:18 pm

Sure

4/4/2018 06:20:43 pm

Forgot the to answer the last question. When you increase the coefficient it goes farther away from the x axis.

4/4/2018 06:36:31 pm

If you change the number, which in this case is -5. It will change the amount/space separating the dots from each other. if it is a larger number it will be a greater space, if smaller number a smaller space. It will most likely get smaller.

When you change the sign to positive it adds more space between them all. When its negative it lessens the space.

When you increase the coefficient it goes farther away from the x axis.

4/4/2018 06:43:19 pm

Getting better! When you change the -5 to -10 where does the graph go? up or down? What about when you change -5 to +10? Where does it move to then? Look where the graph line intersects the y axis.

Revise one more time Jordan! You can do it!

matt

4/4/2018 06:46:53 pm

If you change the the number -5 to go lower like -6 or -7 it goes farther from (0,0), to the right, if you had a positive operation instead of negative, then the number goes farther than (0,0) in the other way

4/4/2018 06:49:37 pm

if you changed the coefficient higher, than it becomes more vertical to the center, if you change x or the coefficient to a negative, then it flips the whole entire thing. And if the negative is lower it gets more vertical in the other way

David

4/4/2018 07:48:27 pm

When you change -5 to a different number, depending on which number you change it to, the dots either shift closer or farther to or from the centre of of the coordinate grid/Cartesian Plane, where the x-axis and the y-axis intersect.
If you change the sign from negative to positive, the operation changes from subtraction to addition. This consequently causes the points have larger space between them. Changing them back to negative results in the space lessening.
Increasing the coefficient causes the line to get closer to the y-axis, lessening the slope, and decreasing it makes it closer to the x-axis.

Also, I think that plant growth over time over time can be graphed, as it is a linear relation. Let x represent days, and let y represent height. If the plant is already 5 cm tall, and it grows at a rate of 2 cm per day, then an equation to find the height could theoretically be:
2x + 5 = y
This equation could be applied to graph it.
I hope that's right. Correct me if I'm wrong.

Aden

4/4/2018 08:07:18 pm

if you change the number -5 the number goes lower to -6&-8

Aden REVISED

4/4/2018 08:16:15 pm

if you change the number -5 the number goes lower to -6&-8 which is gets farther from 0 and-0 to the right not the negative, if it is in the other way the 0 and -0 get farther

4/4/2018 09:46:23 pm

When you change -5 to smaller number like -10, the dot moves further to the right on x-axis, if change to bigger number like -1, the dot moves closer to 0 on x-axis.

If you change from subtraction to addition sign, the dot moves further to the left on the x-axis when number increases.

If changing the coefficient positively, the line gets closer to y-axis when number increases, the line moves closer to x-axis when number decreases.
If changing the coefficient negatively, the line gets closer to y-axis when number decreases, the line moves closer to x-axis when number increases.

Roshin

4/4/2018 08:19:46 pm

When you change -5 to a different number it will change your number and bring the dots closer together and will eventually meet at the middle at 0

When you use addition the dots will move farther away from each other

Changing the coefficient it will normally go farther away from the x axis

Andrew

4/4/2018 10:31:55 pm

When u change the -5 it then changes the line going through the y axis. such as if you turn -5 to 0 it will cut through the origin or the middle where the y and x axis meet.

By adding the coefficient it will start to move farther from the x axis.

Lainey

4/5/2018 07:38:40 am

Not sure I could see any dots, but whenever I add a 10 to 3x-" " it moves a grid farther.

Lawrence

4/5/2018 08:18:02 am

Its not working for me, it keeps on saying I need flash something like that and when i try to get flash it doesn't work still

Comments are closed.

Earth Bites

SOCIAL MEDIA HUB

About Us

Archives

Categories