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)