Answer:
Step-by-step explanation:
The given function is .
When we compare to , we have
and c=10
The equation of the axis of symmetry of a vertical parabola is:
Also from the question the axis of symmetry is x=6
We substitute the values to get:
B
Answer:a= -21
8x+30=110
8x=110-30
8x=80
x=80/8
x=10
5/9
i used a calculator
x=1 y=2
8x +4 y=16
8(1) + 4(2)=16
8+8=16
this is correct so now lets check the other one
7y=15-x
7(2)=15-(1)
14=14
this is also correct