Use a graphing utility to find or approximate the x-intercepts of the graph of the quadratic function.
-$$y = x ^ { 2 } + 6 x + 8$$
A) $( - 2,0 ) , ( - 4,0 )$
B) $( 2,0 ) , ( 4,0 )$
C) $( 12,0 ) , ( - 4,0 )$
D) $( \sqrt { 8 } , 0 ) ( - \sqrt { 8 } , 0 )$

Question

Quizplus · Accepted Answer

The x-intercepts of a quadratic function can be found by setting $y = 0$ and solving the equation $0 = x^2 + 6x + 8$. Factoring the quadratic equation gives $(x + 2)(x + 4) = 0$, which has solutions $x = -2$ and $x = -4$, corresponding to the x-intercepts $(-2, 0)$ and $(-4, 0)$.

Use a Graphing Utility to Find or Approximate the X-Intercepts y=x2+6x+8y = x ^ { 2 } + 6 x + 8y=x2+6x+8

Use a Graphing Utility to Find or Approximate the X-Intercepts $y = x ^ { 2 } + 6 x + 8$