Helping students gain understanding and self-confidence in algebra.
santaclaus wrote:Find the equation of the linear function g whose graph is perpendicular to the line 5x-3y=6; the two lines intersect at x=15 (Do you have any rules for me to follow ? I can't remember how to do this) thanks
santaclaus wrote:so if I solve for y, I get -3y=6-5x
then, y=5/3x +2
5x - 3y = 6
-3y = 6 - 5x
y = --- + ---
santaclaus wrote:so perpendicular to this would be y=-3/5x-2 because I took the reciprocal and opposite sign for slope.
santaclaus wrote:Now what does it mean when the two lines intersect at x=15?
santaclaus wrote:where would i insert x=15? in this equation y=-3/5-2? or the initial one ?