how do i graph the parabola y=3x2-1

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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how do i graph the parabola y=3x2-1

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y=3x^2-1

to graph the function we need a few points

x y=3x^2-1
-2 y=3\left(-2\right)^2-1=3\left(4\right)-1=12-1=11
-1 y=3\left(-1\right)^2-1=3\left(1\right)-1=3-1=2
0 y=3\left(0\right)^2-1=3\left(0\right)-1=0-1=-1
1 y=3\left(1\right)^2-1=3\left(1\right)-1=3-1=2
2 y=3\left(2\right)^2-1=3\left(4\right)-1=12-1=11

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