Divide
7/12 = <span>.583
We get answer: </span><span>D. .583</span>
Here is a graph. When you use a graphing calculator, it isn't always necessary to solve for y.
Note different colors are used for the different problems. Problem 2 has a dashed line, as described by "Remember, ...".
The answers are
1. 18
2. 1 1/15