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Pearson Algebra 1 Common Core, 2011 View details

2. Quadratic Functions

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Exercise 42 Page 558

Make a table of values and connect the points with a parabola.

Practice makes perfect

We want to graph the given quadratic function. y=- x^2 - 2To do so, we will first make a table of values.

x	- x^2 - 2	y=- x^2 - 2
0	- ( 0)^2 - 2	- 2
1	- ( 1)^2 - 2	- 3
2	- ( 2)^2 - 2	- 6
3	- ( 3)^2 - 2	- 11

Note that since the given function has the form y=ax^2+c the axis of symmetry is the vertical line x= 0. Now, let's plot the obtained points and their reflections across the axis of symmetry. Then we can connect them with a parabola.