Question

The table shows ordered pairs of the function y= 8 - 2x. What is the value of y when x= 8?

A. –20

B. –8

C. 8

D. 48

Answer 1

The answer is -8 (Option B)

Explanation:

You can solve this by replacing x in the equation with 8, because the question give us what x equals. So instead of y=8-2x, we get y=8-2(8)

Now that we have the complete equation, we can solve for y:

y= 8 - 2x

y= 8 - 2(8)

y= 8 - 16

y= -8

Answer 2

Answer: OPTION B.

Explanation:

You know that the function is:

`y= 8 - 2x`

Then, in order to find the value of the variable "y" when the value of the variable "x" is 8 (
`x=8`), you need to substitute this value into the function
`y= 8 - 2x`.

Therefore, this is:

`y= 8 - 2x\\\\y= 8 - 2(8)\\\\y= 8 - 16\\\\y=-8`