Question

point M lies on the line with the equation y=-3x-6. The y-coordinate of M is -3. WHat is the x-coordinate?

Answer 1

x = 3

Explanation:

Every line is made of x and y coordinates. If you have one, you can find the other using the equation.

To solve for x, substitute y = -3 into the equation y = -3x + 6.

-3 = -3x + 6

-3 - 6 = -3x + 6 - 6

-9 = -3x

x = 3