Question

Thank you! please help!

Which equations represents the relationship shown in the graph?

a. y = -1/3x
b. y = 3x
c. y = 1/3 x
d. y = - 3x

Answer 1

D. y = -3x

Explanation:

Firstly, find the coordinates:

(1, -3) and (2, -6)

Just from looking at these, you can tell that the y coordinate is multiplied by negative 3 but to find it using an equation, you can use the slope formula:

`(y2 - y1)/(x2 - x1)`

Where x1 and y1 is the first set of coordinates and x2 and y2 is the second set. Simply plug the variables in:

`(-6 - -3)/(2 - 1)`

`(-6 + 3)/(1)`

`(-3)/(1) = -3`

So the correct answer would be d.

Hope this helps!

Answer 2

The answer should be D. Y = -3x