9. Is the line through points P(2,-9) and Q(6, -13) perpendicular to the line through points R(5, -1) and S(1, -5)? Explain. [GGPE.5]
A) No, their slopes are not opposite reciprocals.
B) No; their slopes are not equal.
C) Yes; their slopes are equal.
D) Yes; their slopes have product -1.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

45

step-by-step explanation: