Question

Which equation, when graphed, has x-intercepts at (-1,0) and (-5,0) and a :-!intercept at (0,-30)?

Answer 1

This is going to be a quadratic curve. We can say that as it has x intercepts at (-1,0) and (-5,0) it can be expressed as:
y = A(x+1)(x+5) where A is some number.
Now when we substitute x = 0 in we get that:
y = 5A therefore as it intercepts at (0,-30) A = -6.

y = -6(x+1)(x+5) = -6x²-36x-30