Question

Find the equation of the line passing through point (1,-5) and perpendicular to y=1/8x+2

Answer 1

Y=8x-13

This is right I solved it

Answer 2

y=8x-13

Explanation:

When you're finding a perpendicular line, you take the opposite of the slope. The slope in this equation is 1/8, so a perpendicular line will have the slope of 8. So we already know y=8x+b.

Plug in your x and y values from the ordered pair and you get -5=8(1)+b. 8×1 is just 8, so it's -5=8+b. Subtract 8 from both sides and you get -13=b.