What are the coordinates of the image of vertex G after a reflection across the line y = x?

(-H, -I)

Step-by-step explanation:

Lets say the coordinates of G are (H, I). If you reflect across y = x, you are then left with (-H, -I).

the answer is d

step-by-step explanation:

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: