7-18 Describing Transformations Suppose the graph of $f$ is given. Describe how the graph of each function can be obtained from the graph of $f .$\begin{equation}f(x)-1 \quad \text { (b) } f(x-2)\end{equation}
What is the difference between the input and the output of a function?
How can you determine if a relation is a one-to-one function?
For the following exercises, determine whether the relation represents a function.
$$\{(a, b),(c, d),(a, c)\}$$
For the following exercises, determine whether the relation represents $y$ as a function of $x .$
$$5 x+2 y=10$$
$$x=y^{2}$$