Big Ideas Math Algebra 1 A Bridge to Success
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Big Ideas Math Algebra 1 A Bridge to Success View details
1. Graphing f(x) = ax^8
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Exercise 4 Page 422

Make a table to find points on the curve. Then plot and connect the points.

Graph:

Comparison to the graph of f(x)=x^2: There is a vertical shrink by a factor of 13 of the graph of f.

Practice makes perfect

To graph the function we will make a table of values.

x 1/3x^2 h(x)=1/3x^2
- 3 1/3( - 3)^2 3
- 1 1/3( - 1)^2 0.33
0 1/3( 0)^2 0
1 1/3( 1)^2 0.33
3 1/3( 3)^2 3

Let's now draw the parabola that connects the obtained points. We will also draw the parent function f(x)=x^2.

From the graph above, we can note the following.

  • Both graphs open up.
  • Both graphs have the same axis of symmetry x=0.
  • The graph of the given function is wider than the graph of the parent function.
  • Both graphs have the same vertex (0,0).

From the graph and the observations above, we can conclude that the graph of h is a vertical shrink by a factor of 13 of the graph of f.