Question

EDIT// answer below thank for the help -.-

Use the parabola tool to graph the quadratic function f(x)=−x2+4.


Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.


What are the two points I need to graph? (x and y)

Answer 1

Step-by-step explanation:

Move it it up 4 and then find your x intercepts.

Find the x intercepts.

$-x^2 + 4 = 0$

Move the 4 over to the right

$-x^2 = -4$

Divide out the -

$\frac{-x^2}{-} = \frac{-4}{-}$

$x^2 = 4$

Take the square root of each side

$\sqrt{x^2} = \pm \sqrt{4}$

$x = \pm \sqrt 2$

Our x intercepts are at (-2,0) (2,0)