Test 2 Section 4 number 26 please!

t2s4-26-1

There’s my rendering of the figure. Let’s label the points we have.

t2s4-26-2

The question asks you to identify whether a few different values of f(x) are equal to 1. There are a bunch of times when the f(x) graph equals 1, shown in green below:

t2s4-26-3

Remember this trick about converting function notation to points on a graph. If f(a) = b, then (ab) is on the graph of the function f. So when the question asks you whether f(4)f\left(\dfrac{3}{2}\right), and f(3) equal 1, you should check to see that (-4,1), \left(\dfrac{3}{2},1\right), and (3,1) are all on the graph. Those points are in blue below.

t2s4-26-4

All three points the question asks about are on the graph, so the answer is D) I, II, and III.

Leave a Reply