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

1. perpendicular

2. parallel

3. perpendicular

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