Determine if the lines are parallel, perpendicular or neither: x - 3y = 15 and y = -3x + 4

The lines are perpendicular. When you graph these line they intersect one another which is perpendicular.

Step-by-step explanation:

When you rearrange the equation x-3y=15 you get y=1/3x-5

what’s the question?

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)