Exercise 10 Page 291

Let's graph using a table. First select some arbitrary values from the domain, then substitute them for x in the given equation. Solving for f(x) will give us the corresponding values from the range.

x	f(x)=- 2x	Simplify
- 1	f( - 4) = - 2( - 1)	f(- 1)=2
0	f( 0) = - 2( 0)	f(0)=0
1	f( 1) = - 2( 1)	f(1)=- 2

Using these x and f(x) values as ( x, f(x)) coordinate pairs, we can plot the points. Connecting these points will give us the graph of the equation.