Answer:
to be fair, i really dont know this
Step-by-step explanation:
Answer:
x = 9√3
Step-by-step explanation:
x^2 = 18^2 - 9^2
x^2 = 324 - 81
x^2 = 243
x = 9√3

Substitute x = 3 in any given equations. I will do in y = - x + 1

Therefore the answer is (3,-2)