y = 4x
2
– 28x – 23
Example 2) a) Convert the function
to vertex form.
b) Verify that the two forms are equivalent.
2
y = 3x
+ 12x + 8
Example 3) Consider the function
.
a) Complete the square to determine the vertex and the maximum or minimum value of the
function.
b) Use the process of completing the square to verify the relationship between the value of p
in vertex form and the values of a and b in standard form.
c) Graph the quadratic function in the grid provided.