Question

Graphs

Answer 1

Which graphs have the point (-2, -7)?

Answer 2

Just a thought...
A closed circle means that that value is included in the solution set. An open circle means that that value is not included or not equal to.

Answer 3

@mathstudent55 A & D?

Answer 4

Correct, so you can eliminate B and C.

Answer 5

Now to choose between A and D, look at the part \(f(x) = x^2 - 1\) for \(x \ne -2 \).

Since there is an x squared, it is a parabola. This parabola has an undefined value at
x = -2.

Which graph A or D, has an open circle at x = -2 in the parabola? That's your answer.