Question

Find the equation of the line through (5,7) which is perpendicular to the line y=−x2−4.

Answer 1

Answer: y=2x-3

Explanation:

if it's perpendicular that means the slope is the negative reciprocal. here the slope is -1/2 so the new slope is 2 and to find b plug in (5,7) into slope intercept form, y=mx+b to get b=-3.