Horizontal Line Test

[nycmathguy]

Section 1.9
Questions 37-40

The function for 37 passes the H.L.T. The function has an inverse.

The function for 38 fails the H.L.T. The function does not have an inverse.

The function for 39 fails the H.L.T. The function does not have an inverse.

The function for 40 passes the H.L.T. The function does not have an inverse.

You say?

 

[MathLover1]

all correct

only for 40 second part is incorrect -> should be The function has an inverse.

 

[nycmathguy]

all correct

only for 40 second part is incorrect -> should be The function has an inverse.

In terms of Table 40 it was a typo at my end. I can cleary see that the function has an inverse.

Like precalculus so far?