a perpendicular line y=1/2x+5 with y intercept -2

Question

a perpendicular line y=1/2x+5 with y intercept -2

 

Answer 1

Perpendicular lines have negative reciprocal slopes

 

y = mx + b

m = slope, b = y intercept

 

y = (1/2)x + 5

m = 1/2

perpendicular slope: m = -1/(1/2) = -2

 

y = -2x - 2

is perpendicular line with y intercept -2