Question

If the coordinates of point E are (-4, y), what is the value of
у?

Answer 1

y = -8

Explanation:

got 100%

Answer 2

-8

Explanation:

First we need to find the slope of CD.

We know C is (-10, -2)

and we know D is (10,6)

If we use the slope formula, we can see the slope is
`m=(6-(-2))/(10-(-10))`

`m = (8)/(20) \\m=(2)/(5)`

We can see point F is at (6,-4)

We can find the equation of this line by using point slope form, and plugging in F as our point.

`y-(-4)=(2)/(5)(x-6)\\y=(2)/(5)x-(32)/(5)`

To find where E, we need to find the y value when x = -4

`y=(2)/(5)(-4)-(32)/(5)\\y =-8`