Find the x and y Intercepts y=x^2-15

$y = x^{2} - 15$

Find the x-intercepts.

To find the x-intercept(s), substitute in $0$ for $y$ and solve for $x$ .

$0 = x^{2} - 15$

Solve the equation.

Rewrite the equation as $x^{2} - 15 = 0$ .

$x^{2} - 15 = 0$

Add $15$ to both sides of the equation.

$x^{2} = 15$

Take the square root of both sides of the equation to eliminate the exponent on the left side.

$x = \pm \sqrt{15}$

The complete solution is the result of both the positive and negative portions of the solution.

First, use the positive value of the $\pm$ to find the first solution.

$x = \sqrt{15}$

Next, use the negative value of the $\pm$ to find the second solution.

$x = - \sqrt{15}$

The complete solution is the result of both the positive and negative portions of the solution.

$x = \sqrt{15}, - \sqrt{15}$

x-intercept(s) in point form.

x-intercept(s): $(\sqrt{15}, 0), (- \sqrt{15}, 0)$

Find the y-intercepts.

To find the y-intercept(s), substitute in $0$ for $x$ and solve for $y$ .

$y = {(0)}^{2} - 15$

Solve the equation.

Remove parentheses.

$y = 0^{2} - 15$

Remove parentheses.

$y = {(0)}^{2} - 15$

Simplify ${(0)}^{2} - 15$ .

Raising $0$ to any positive power yields $0$ .

$y = 0 - 15$

Subtract $15$ from $0$ .

$y = - 15$

y-intercept(s) in point form.

y-intercept(s): $(0, - 15)$

List the intersections.

x-intercept(s): $(\sqrt{15}, 0), (- \sqrt{15}, 0)$

y-intercept(s): $(0, - 15)$