Question

Which of the following is an x-intercept of the function shown below?

y=x^2+12x+36

a) x=-6
b) x=9
c) x=6
d) x=-4

Answer 1

x intercept means that the curve of this function will cut the x axis at some point ... and when that happens the value of y will be 0

so .... u have to find the value of x where u will get y = 0 when u substitute that value of x in the expression

obviously in this instance its (- 6)

hope this will help ya !! :)