Question

Please help and show all work:
Write the equation of the line which passes through (2, –3) and is perpendicular to y = 4x + 7 in standard form.

Answer 1

Y=4x+7

y-(-3)= 4x-8
y+3=4x-8
y=4x-11

Answer 2

y-y1=m (x-x1) equation look familiar?

Answer 3

uhm that is not the answer... m=-(1/4) and not 4... parallel lines have the same gradient, but perpendicular lines have gradients whose product is -1. so the answer is y=(-1/4)x -(5/2)