6 terms

to graph parabula's axis and find vertex

step 1
replace function with y
step 2
put in order
step 3
find x= -b/2a and graph dotted vertical line.
step 4
find y by substituting x in the equation.
step 5
let y=0 and factor
step 6
if cant factor pick one x on left side of dotted line and one x on right side then graph.