Question

The graph of the equation y = 3x − 4

is shown. What statement is true about every point on the graph?

Answer 1

If you triple the x-coordinate and subtract 4, you get the y-coordinate.

Explanation:

y = 3x - 4

Write this as a word equation, and you get the answer above.

A is wrong. When x = 3, y = 5, so x < y.

B is wrong. When x = 1, y = -1, so y ≠ x – 3.

D is wrong. When x = 1, y = -1, so x and y do not have the same sign.