Question

What is the equation, in standard form, of a parabola that models the values in the table? Please help...

Answer 1

Did you think of plugging number into x to see if it is the same?

Answer 2

No--I'll be honest I have no clue how to do this!

Answer 3

oki i will help you

Answer 4

one of the first things you can do is either, plug the values into the given equations, or plug it into your graphing calculator

Answer 5

if you plug the x into the equation, the y should equal to the corresponding value.

Answer 6

so you try plugging in, also F(x) is another fancy term for y.

Answer 7

what do you not under stand?

Answer 8

lets try the first one:

-3(-2)^2-4(-2)+3 = -1 this does not equal to -7 therefore, the first equation is not the answer.

Answer 9

Try equation C.

If you plug in the values to the equation (or into a graphing calculator), it should be correct.

Because:

-4(-2)-3(-2)+3 = -7 So this coordinate is correct.
Plug in the other two x's and see if it's correct, C should be your answer.

Answer 10

Im sorry im really just lost! I'm leaving for work but I'll take another look at this later...Thanks

Answer 11

no problem, but this is a really simple question about using basic algebra to plug into the equation. Do you have a graphing calculator? Because you can plug those equations in to see if the x values match the y values. ;p