Find an equation that passes through the points (2,4) and is perpendicular to the line 3x+4y-22=0

Hello:
the equation is : y = ax+b
the slope is a : a×(-3/4) = -1( perpendicular to a line : 

a =4/3   

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1

- 70

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