1. Line 1 represents the graph of 3x+4y=-14. Line 2 passes through the point (-5,7), and is perpendicular to line 1. If line 2 represents the graph of y=mx+b, then find m+b.
4y = -3x -14
y = -3/4 x - 14/4 slope of THIS line, m, is -3/4
perpindicular slope is - 1/m = 4/3
point slope form of the second line is
(y-7) = 4/3 (x+5) re-arrange into y = mx+b form to calc m+b