SOLUTION: Let line l1 be the graph of 5x + 8y = -9. Line l2 is perpendicular to line l1 and passes through the point (10,10). If line l2 is the graph of the equation y=mx +b, then find m+b.

Question 1082095: Let line l1 be the graph of 5x + 8y = -9. Line l2 is perpendicular to line l1 and passes through the point (10,10). If line l2 is the graph of the equation y=mx +b, then find m+b.
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
L2, for the Ax+By=C form makes the lines perpendicular.

------slope-intercept form
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