Find the x- and y-intercepts: $$y = x ^ { 2 } + 18 x + 81$$
A) (9,0), (0, 0); (0,81)
B) (-9,0); (0,-81)
C) (-9, 0); (0, 81)
D) (-9,0), (9,0); (0,81)
E) (9,0); (0,81)

Question

Quizplus · Accepted Answer

To find the x-intercept(s), set y = 0: $0 = x^2 + 18x + 81$. This can be factored as $(x + 9)^2 = 0$, giving x = -9. So, the x-intercept is (-9, 0). For the y-intercept, set x = 0: $y = 0^2 + 18(0) + 81 = 81$, giving the y-intercept as (0, 81).

Find the X- and Y-Intercepts y=x2+18x+81y = x ^ { 2 } + 18 x + 81y=x2+18x+81

Find the X- and Y-Intercepts $y = x ^ { 2 } + 18 x + 81$