The vertex of this parabola is at (2,-4). when the y-value is -3 and the x-value is -3. what is the coefficient of the squared expression in the parabola's equation?

-5 would be your answer

Step-by-step explanation:

I currently am not able to explain this to you

but I do know for a fact that -5 would be your answer

I hoped this helped!

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb