Answer:
(x, y) = (7, -7)
Step-by-step explanation:
You can eliminate y by adding the two equations:
(3x -y) +(3x +y) = (28) +(14)
6x = 42 . . . . simplify
x = 7 . . . . . . divide by 6
You can eliminate x by subtracting the two equations:
(3x +y) -(3x -y) = (14) -(28)
2y = -14 . . . . simplify
y = -7 . . . . . . divide by 2
The solution is (x, y) = (7, -7).
Answer:
I'm not helping yall learn on ya own .
Step-by-step explanation:
9, i believe! please check, I’m not a super computer LOL
Answer:
F(4) = -3
Step-by-step explanation:
First, you would plug in 4 for x. PEMDAS, so you would multiply -3 and 4, giving you -12. Then add 9, which gives you -3.
