Question

Which is the equation of the line?

A. x + 3y = 6
B. 3x + y = 6
C. 3x - y = 12
D. x - 3y = 12

I think it's D

Answer 1

Use the points (0,6) or (2,0), and see which equation is true.

For (0,6), let x = 0, and let y = 6

(0) + 3(6) = 6?
3(0) + 6 = 6?
3(0) - 6 = 6?
(0) -3(6) = 6?

Answer 2

Oh okay

Answer 3

Still confused

Answer 4

Lila, please go back to the illlustration you posted. Try to identify the coordinates of the y-intercept (the point at which the graph crosses the y-axis). Next, try to identify the slope of that line. Ask for help with this if you need to. Note: the answer is NOT D.

Answer 5

Ohhh okay, I see. Thanks!