Let
and 

We have

Therefore

We have the equation of a line:

Put the coordinates of the point (0, 7) to the equation of a line:

Answer: 
Bro i need major help right now too but um idek what to do but good luck
Answer:
line of symmetry , x = 3
Step-by-step explanation:
Standard form of quadratic equation is y = ax^2 + bx + c, where a, b, and c equal all real numbers. You can use the formula x = -b / 2a to find the line of symmetry.

a = 1, b = -6, c = -16
Line of symmetry is ,

Answer: 3055.25
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
When the function is less than but equal to and it's opposite are always solid dots. By this you can do simple process of elimination.