Question

**WILL MEDAL**
Which functions have a positive rate of change and which have a negative rate of change?
1. 2x - 5y = -15 <<< I think A

2. y = -4x + 9 <<< I think B

3. x y <<<< Im not sure
----------
2 -10
4 -16
6 -22

4. x y <<< I think B
----------
-3 15
-2 11
-1 7

A. positive
B. negative

Answer 1

@KamiBug @haleyelizabeth2017 plzz help?????

Answer 2

You are correct for the first one because -2/-5=2/5
You are also correct for the second one because the slope is negative.
For the third one, you are going to want to take 2 points from the table and plug it into the slope formula. (m=y2-y1/x2-x1)
To check the last one, do the same as I told you for the third one :)

Answer 3

Ok thx

Answer 4

No problem! :)

Answer 5

The third one you can see it is moving downwards so it is going to be a negative

Answer 6

Look at the y -10, -16

Answer 7

Yea I saw that thx(:

Answer 8

Look at 4, what do you think. Remember if the line is going down it is negative.

Answer 9

Ok just a sec plz

Answer 10

Look at y, it is moving down.

Answer 11

Yea its moving down so its negative right?

Answer 12

Yes, x starts at -3 and as it moves toward 0 y is moving down

Answer 13

Thank you very much I will fan u!!!!!!!!!!!!!!!