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"State the point you know lies on each of the following functions" - Help Please

My girlfriend is taking college algebra and asked me about these questions (see attachments). I am totally drawing a blank, the book has no examples, she has no notes and the teacher hasn't gotten back to us. I know it's gotta be easy, but it's eluding me.

If you have any time at all and want to help a struggling college student, we would really appreciate it. =)

Re: "State the point you know lies on each of the following functions" - Help Please

Quote:

Originally Posted by

**opusknecht** My girlfriend is taking college algebra and asked me about these questions (see attachments). I am totally drawing a blank, the book has no examples, she has no notes and the teacher hasn't gotten back to us. I know it's gotta be easy, but it's eluding me.

If you have any time at all and want to help a struggling college student, we would really appreciate it. =)

Frankly, I am confused as to what you are asking. You have the correct answers.

From the given $\displaystyle g(4)=-2$.

Let's do part b). $\displaystyle 1.6t=4$ so $\displaystyle t=2.5$.

Thus $\displaystyle g(1.6(2.5))+7.68=5.68$ so $\displaystyle (2.5,5.68)$ is on that curve.

Re: "State the point you know lies on each of the following functions" - Help Please

Those answers were from the study guide. We didn't know the process of *getting* the answer for new questions that will be on the test. From your example I figured out the process. Thanks!