Posted by **Carmen** on Saturday, October 13, 2007 at 11:46pm.

Please explain to me how to do the following problems, I don't understand them. Thanks!

Find the x-intercepts (if any) for the graph of the quadratic function.

1.f(x) = (x + 2)2 - 4

Find the y-intercept for the graph of the quadratic function.

5.y + 9 = (x + 3)2

Find the domain and range of the quadratic function whose graph is described.

7.The vertex is (1, -15) and the graph opens up.

- Quadratic Functions -
**Reiny**, Sunday, October 14, 2007 at 1:34am
To find the x-intercept, set y=0 and solve for x

To find the y-intercept, set x=0 and solve for y

the domain of a standard parabola that opens either up or down is

x "is an element of" R

the domain is either y ≥ "the y value of the vertex", if it opens up or

y ≤ "the y value of the vertex" if it opens downwards

## Answer This Question

## Related Questions

- Quadractic Functions - Please check my answers. Find the x-intercepts (if any) ...
- quadratic functions - The graph of a quadratic function can have 0, 1 or 2 x-...
- Math - I can't remember how you find the roots of quadratic equations other than...
- Math - I can't seem remember the rules for this.Can someone please help me with ...
- math 11 - 4. a)how many different x-interceps could the graph of a quadratic ...
- Mathematics - Determine the equation of a quadratic function that satisfies each...
- Please help! quadratic equation - Given the following quadratic equation find. a...
- Math(Quadratic Functions) - Determine the quadratic function, f(x), with x ...
- algebra - Can you explain this? An intercept of the quadratic graph is the same ...
- Math - If a graph of a quadratic function can have 0, 1 or 2 x-intercepts. How ...

More Related Questions