Home > CCA2 > Chapter 7 > Lesson 7.1.1 > Problem 7-9
7-9.
Consider the function
Complete the square to find the vertex.
Add and subtract
on the same side of the equal sign. Simplify.
Simplify more.
Find the y-intercept.
Substitute
to find the y-intercept. Use the vertex, the y-intercept, and the symmetry of parabolas to find a third point and sketch the graph.