Question

A line has this equation: -x + 7y = 49 write an equation for the perpendicular line that goes through (5, 3)

Answer 1

-x + 7y = 49

7y = x + 49

y = (1/7)x + 7

The slope of a perpendicular line will be -7.

3 = -7(5) + b

3 = -35 + b

b = 38

y = -7x + 38

7x + y = 38