Question

Which ordered pairs are a solution to the equation: y = 6 - 2x

Select all that apply.

Question 5 options:

(-1, 2)


(-1, 8)


(-2, 6)


(1, 4)

Answer 1

Correct choices are:

(-1, 8)

(1, 4)

which would correspond to the second and fourth entries of your options

Explanation:

Best way to solve this problem is to plug in x and y values for each ordered pair and see if these values result in a consistent equation. It is impossible to solve the equation since there are two unknowns and only one equation

Here is each ordered pair and resulting y value when x value is plugged in

(-1, 2) ==> y = 2, x = -1
6 - 2(-1) = 6 + 2 = 8
This is not equal to the given value of y =2. So incorrect

(-1, 8)
We figured out from above that when x = -1, y = 8 so this is a correct choice

(-2, 6) ==> x = -2, y = 6

6 - 2(-2) = 6 + 4 = 10
Does not match y-value; incorrect

(1, 4) ==> x = 1, y = 4

6 - 2(1) = 6 - 2 = 4

This matches the given value of y so correct choice

Answer 2

Correct answer:

(-1, 8)

(-2, 6)

(1, 4)