SOLUTION: Graph the quadratic equation. Label the ordered pairs for the vertex and the y-intercept. y = x^2 + x -2

Question 172244This question is from textbook Introductory Algebra
: Graph the quadratic equation. Label the ordered pairs for the vertex and the y-intercept.
y = x^2 + x -2 This question is from textbook Introductory Algebra

Answer by KnightOwlTutor(293) (Show Source): You can put this solution on YOUR website!

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=9 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1, -2. Here's your graph:

The lowest point is the vertex.
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