# Chapter 3: Graphs and Functions

305

In the following equation, determine whether each equation is a function.

308

In the following exercises, evaluate the function

Function:$f\left(x\right)=3x+4$

309

In the following exercises, evaluate the function:

$a.f\left(2\right)$

$b.f(-1)\phantom{\rule{0ex}{0ex}}c.f\left(a\right)$

Function:$f\left(x\right)=-4x+2$

310

In the following exercises, evaluate the function:

$a.f\left(2\right)\phantom{\rule{0ex}{0ex}}b.f(-1)\phantom{\rule{0ex}{0ex}}c.f\left(a\right)$

Function:$f\left(x\right)=-6x-3$

3.102

Determine whether each graph is the graph of a function

3.104

Graph: f(x) = −4x − 5

3.106

Graph: f(x) = 3

3.107

Graph:$f\left(x\right)={x}^{2}$

3.108

Graph :$f\left(x\right)=-{x}^{2}$

3.109

Graph :$f\left(x\right)={x}^{3}$