Question

One line passes through the points (-7,5)

(−7,5) and (-1,-3) another line passes through points (0,3) and (3,-1)

Are the lines perpendicular, parallel or neither ?

Answer 1

Answer: Prependicular

Explanation:

Since you have 2 points of a line you can find the gradient of each line using (y2-y1)/(x2-x1) or change in y divided by change in x. For line one this is (-3-5)/(-1+7) = -8/6 = -4/3

For line two this is (-1-3)/(3-0) = -4/3

Since they have the same gradients they are in fact parallel

Perpendicular lines will have the negative recpriocal of each other gradient.