Answer:

Step-by-step explanation:
We have:

And we want to solve for y when x is -9.
So, substitute -9 for x and evaluate:

Hence, when x is -9, y is -13.
Equation 1: x² + y = 7
Equation 2: 3x + 7 = 9
Use Equation 2 to solve for "x" and plug in "x" into Equation 1 to solve for "y".
3x + 7 = 9
3x = 2
x = 
*********************************
x² + y = 7
(
)² + y = 7
+ y = 7
y = 7 -
y =
-
y =
Answer: (
,
)
Answer:
b
Step-by-step explanation:
Answer:
x y
-6 11
3 5
15 -3
-12 15
Step-by-step explanation:
just use substitution