Answer:
(4, -18)
Step-by-step explanation:
First Use this formula for the x -axis -b/2a
-8/2(1) is -4
Then plug in -4 to the equation
(-4)^2+8(-4)-2 = -18
41,755.72
7 and 10 is half
so we expect the people come to wedding half of 120÷2=60 people
i just try
a=20
7+13=20
20-7=13
y=mx+b
therefore m = 1/2
and b = -6