8.4 WU

• Up

• +h

• Down

• -h

• Left

• -k

• Right

• +k

• Narrow

• a is greater than 1

• Opens Down

• a is a decimal/fraction less than 1

• Opens Up

• -a

• Wide

• +a

The axis of symmetry is equal to the​...

• y-intercept

• h value of the vertex

• k value of the vertex

• 0

• The k value is equal to the h value

• The k value is -9

• Replace all the x's with -3 and solve

• Divide the c value by the a value

• a

  (0,2)

• b

  (0,12)

• c

  (0,-9)