Find expressions for the quadratic functions whose graphs are shown.
I know how to do f(x) but I'm stuck on g(x).
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Originally Posted by zweevu Find expressions for the quadratic functions whose graphs are shown.
I know how to do f(x) but I'm stuck on g(x). First, note that the y-intercept is 1.
Using the other two points, we will have two equations in two unknowns to solve simultanously.
Equation 1: .
Equation 2: .
So your system of equations is... .
Solve for a and b.
The second function has the form
The y-intercept c is 1 as shown in the picture so
Now use points (-2,2) ...(1)
and (1,-2.5) ...(2)
and solve the sytem
The question is looking g(x) = ... what would I type in for the answer. I got +/- 1/6 for a and b though.
Edit: NVM You plug them into the original equation. Thanks!
can you find ?
We assume that:
and the graph of the function got through 3 points, they are:
can anyone figure out f(x) ???
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