Find the x-intercepts.
-$$f( x ) = x ^ { 2 } + 7 x$$
A) $x$-intercepts $( 0,0 )$ and $( 7,0 )$
B) x-intercepts $( 0 , - 7 )$ and $( - 7,0 )$
C) No x-intercept
D) $x$-intercepts $( 0,0 )$ and $( - 7,0 )$

Question

Quizplus · Accepted Answer

To find the x-intercepts, set $f(x) = 0$. So, $x^2 + 7x = 0$. Factoring out x gives $x(x + 7) = 0$, which has solutions $x = 0$ and $x = -7$. Therefore, the x-intercepts are $(0,0)$ and $(-7,0)$.

Find the X-Intercepts f(x)=x2+7xf( x ) = x ^ { 2 } + 7 xf(x)=x2+7x

Find the X-Intercepts $f( x ) = x ^ { 2 } + 7 x$