Which of the following equations represents a line that is parallel to the line with equation y = -3

Which of the following equations represents a line that is parallel to the line with equation y = -3x + 4?

A) 6x + 2y = 15
B) 3x - y = 7
C) 2x - 3y = 6
D) x + 3y = 1

Parallel lines have the same slope, so we're looking for a line with a slope of 3, in the form y = mx + b. For this case, we want a line with a slope of -3, like our given line.

If we rearrange A) by subtracting 6x from each side, we get:
2y = -6x + 15

Divide each side by 2, we get:
y = -3x + 15/2

This line is in the form y = mx + b, where m = -3. So our answer is A.