A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
–9x – 10y = -42
–9x + 7y = 60

F(x)=x^3+4 question 6 options: the parent function is shifted up 4 units the parent function is shifted down 4 units the parent function is shifted left 4 units the parent function is shifted right 4 units