Question

Find the equation for the line perpindicular to 7x-21y=39 that passes through the point (-3, 5).
answer in y=mx+b. Simplify as much as possible, but leave iproper fractiobns. help please?

Answer 1

21y = 7x - 39
y = (1/3) x - 13/3

slope of the perpendicular line = -1 / (1/3) = -3

using y-y1 = m(x-x1)
y - 5 = -3(x+3)
y = -3x -4

Answer 2

alright thank you again, sure it won't be the last