g(x) = f(x) + 9 shifts it up 9 units.
g(x) = f(x+2) shifts it left 2 units.
g(x) = -f(x) reflects it across the x-axis.
It looks like you may want
... g(x) = -(f(x+2) +9) . . . . . shifted up, then reflected

Hi what are you trying to do here?
X + y = 2
Substitute x + 8 into y
x + x + 8 = 2
2x + 8 =2
(Subtract 8 from both sides)
2x = -6
(Divide both sides by 2)
x = -3
Subsitute x = -3 into either equation to find y
x + y = 2
-3 + y = 2
(Add 3 to both sides)
y = 2 + 3
y = 5
Or y can be solved for using:
y = x + 8
y = -3 + 8
y = 5
Answer:
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Step-by-step explanation:
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