A question for my project asks,
"What Are the roots/zeros/x-intercepts of your parabola
i. Solve by Factoring
ii. Solve by using the quadratic formula.

(the equation is x^2 + 9x +18)
I factored my equation and was left with x=-6 and x=-3.
What do I do with these numbers to find the roots/zeros/x-intercept ? Also, is the y-intercept my y-coordinate for the vertex of the equation?

Question

A question for my project asks,
"What Are the roots/zeros/x-intercepts of your parabola 
i. Solve by Factoring
ii. Solve by using the quadratic formula. 

(the equation is x^2 + 9x +18) 
I factored my equation and was left with x=-6 and x=-3. 
What do I do with these numbers to find the roots/zeros/x-intercept ? Also, is the y-intercept my y-coordinate for the vertex of the equation?

anonymous · Answer

x = -6, -3 are your roots, zeros, and x-intercept

Roots, zeros, and x-intercept are all the same thing. they all describe the point at which the equation crosses the x-axis

anonymous · Answer

Thanks!