1.
Solve the system of equations.
x
-
y
+ 6 = 0
x
2
+
y
2
= 16
A.
no solution
B.
(1, 7),
C.
(4, 0)
D.
(-2, 4)
Hint
2.
Solve the system of equations.
x
2
+
y
2
= 4
A.
B.
C.
D.
no solution
Hint
3.
Solve the system
.
A.
B.
C.
D.
Hint
4.
Solve the system
A.
B.
C.
D.
Hint
5.
Gail and Gayla throw balls into the air. The equation
represents Gail's throw, where
x
is time in seconds, and
y
is height. Gayla's throw is represented by
When are the balls at the same height?
A.
at –1 seconds
B.
at 7 seconds
C.
at 5 seconds
D.
never
Hint
represents Gail's throw, where x is time in seconds, and y is height. Gayla's throw is represented by 
When are the balls at the same height?