And this week in Precalculus 11 we went over vertex and finding X and Y intercepts . I learned how to find the vertex and X and Y intercept when given a vertex form quadratic equation.
Vertex: The vertex is either at the highest or lowest (max/min) there’s also the point where the middle of the parabola is.
For first example I’m going to give you a graph and we will find the All 3 of the things I listed. Will start with the graphed equation.
we can see in this parabola contacts is (-3,4).
The X intercepts are when the parabola crosses over our X axis. (-5,0) (-1,0)
Y intercept is when the parabola crosses over the Y axis. (0, -5)
Now we will graph an equation (if you are slightly confused go to my week 9 blog post, it explains what each part does)
review week 9:
graph:
As from our week 9 lesson we know that the parabola will move 4 to the left and 1 down. The stretch remains the same as there is no coefficient.