Substituting values from the domain will give the corresponding values from the range.
Practice makes perfect
We can graph the linear function using a table. First, select some arbitrary values from the domain, then substitute them for x in the given function. Solving for f(x) will give us the corresponding values from the range.
x
f(x)=3x-2
Simplify
0
f( 0)=3( 0)-2
f(0)= -2
1
f( 1)=3( 1)-2
f(1)= 1
2
f( 2)=3( 2)-2
f(2)= 4
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 function.
