GRAPHING QUADRATIC FUNCTIONS
BY: BRITTANY HURLEY
LET’S REMEMBER OUR STEPS:
1. ENTER THE FUNCTION INTO Y = IN CALCULATOR.2. PRESS GRAPH TO SEE IT.3. PRESS 2ND GRAPH TO PULL UP THE TABLE OF VALUES. SCROLL UP OR
DOWN TO FIND THE VERTEX.4. PLOT YOUR VERTEX AND THE POINTS ABOVE OR BELOW IT.
GRAPH: Y = 2X2 + 8X + 1
STEP 1:ENTER THE FUNCTION IN Y = IN
CALCULATOR.
GRAPH: Y = 2X2 + 8X + 1
STEP 2:PRESS GRAPH TO SEE IT.
GRAPH: Y = 2X2 + 8X + 1
STEP 3:PRESS 2ND GRAPH TO PULL UP THE
TABLE OF VALUES.SCROLL UP OR DOWN TO FIND THE
VERTEX.
VERTEX
GRAPH: Y = 2X2 + 8X + 1
STEP 4:PLOT YOUR VERTEX AND THE POINTS ABOVE OR BELOW IT.
FOR THIS GRAPH, THE POINTS THAT I PLOTTED WERE:
(-4, 1), (-3, -5), (-2, -7), (-1, -5), AND (0, 1)