through (-2,1) and is perpendicular to 7y=x-4

Answer 1

the given line has equation y = (1/7)x - (4/7)

the slope of the given line is 1/7

the slope of the perpendicular line is -7.

B = y - mx = 1 - (-7)(-2) = 1 - 14 = -13

the perpendicular line is y = -7x-13