What additional piece of information would you need to use the Side-Angle-Side Triangle Congruence Postulate to prove that △RQP ≅ △SQP?

Step-by-step explanation:

Given

△RQP ≅ △SQP

See attachment

Required

Additional information that shows that △RQP ≅ △SQP

△RQP and △SQP share a common side QP:

This implies that:

---- Side (S)

△RQP ≅ △SQP implies that:

---- Angle (A)

Lastly, we already established that △RQP and △SQP share a common side QP

Then remove point P, we have: RQ and SQ

This implies that:

--- Side (S)

Hence, the additional piece of information needed is:

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