Raymond B. answered • 03/12/22
Tutor
5
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Math, microeconomics or criminal justice
d. 4/5
5x +4y = 7
solve for y
subtract 5x from both sides
4y =-5x +7
divide both sides by 4
y = (-5/4)x + 7/4
the coefficient of the x term, when the equation is solved for y, is the slope
the slope =-5/4
the perpendicular line has slope = the negative inverse. take -5/4, change the sign and flip the fraction upside down to get +4/5. That's the slope of the perpendicular line
