Use the ideas developed in problem 6-118 to change each of the following quadratic equations into graphing form. Identify the vertex and the line of symmetry for each one. Homework Help ✎
Make the coefficient of
equal to by factoring out a in the first two terms.
Take half of 3 and square it. You get
. The indicates you really added or . So add the inside the parentheses and subtract the equivalent 9 outside the parentheses on the same side.
See part (a).