Find the x-intercepts, if any. Express the intercept(s) as ordered pair(s).

Question

r(x)=x² + 4x + 3

How many x-intercepts does this function have?

Answer 1

y intercept is when x = 0, r(0) = 3

x intercept is when y=0

0=x^2 + 4x + 3 = (x+3)(x+1)

x = -1 and -3

x intercepts are -1 and -3

there are 2 x intercepts

points are (0,3), (-1,0) and (-3,0)