Find the scale factor of dilation if PQ is dilated to P′Q′ such that = 18 and = 6. A. 24 B. 1/3 C. 12 D. 3

Option B is correct

Step-by-step explanation:

The dilation scale is calculated by:

scale = side_after/side_before = P'Q'/PQ = 6/18 = 1/3

=> Option B is correct

Hope this helps!

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18