Find the x and y Intercepts y=x^2+7x

$y = x^{2} + 7 x$

Step 1

Find the x-intercepts.

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

$0 = x^{2} + 7 x$

Solve the equation.

Rewrite the equation as $x^{2} + 7 x = 0$ .

$x^{2} + 7 x = 0$

Factor $x$ out of $x^{2} + 7 x$ .

Factor $x$ out of $x^{2}$ .

$x \cdot x + 7 x = 0$

Factor $x$ out of $7 x$ .

$x \cdot x + x \cdot 7 = 0$

Factor $x$ out of $x \cdot x + x \cdot 7$ .

$x (x + 7) = 0$

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$x = 0$

$x + 7 = 0$

Set $x$ equal to $0$ .

$x = 0$

Set $x + 7$ equal to $0$ and solve for $x$ .

Set $x + 7$ equal to $0$ .

$x + 7 = 0$

Subtract $7$ from both sides of the equation.

$x = - 7$

The final solution is all the values that make $x (x + 7) = 0$ true.

$x = 0, - 7$

x-intercept(s) in point form.

x-intercept(s): $(0, 0), (- 7, 0)$

Step 2

Find the y-intercepts.

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

$y = {(0)}^{2} + 7 (0)$

Solve the equation.

Remove parentheses.

$y = 0^{2} + 7 (0)$

Remove parentheses.

$y = {(0)}^{2} + 7 (0)$

Simplify ${(0)}^{2} + 7 (0)$ .

Simplify each term.

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

$y = 0 + 7 (0)$

Multiply $7$ by $0$ .

$y = 0 + 0$

Add $0$ and $0$ .

$y = 0$

y-intercept(s) in point form.

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

Step 3

List the intersections.

x-intercept(s): $(0, 0), (- 7, 0)$

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

Step 4

Find the x and y Intercepts y=x^2+7x

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