2. Slope of a Line
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Make a function table to obtain ordered pairs.
To graph the function y= 32x- 12, we will follow two steps.
Let's do these things one at a time.
To make a function table, we will select some values of x which will be part of our domain. Then, we will substitute these values for x to find the corresponding values of y. These x- and y-values will create a set of ordered pairs.
| x | 3/2x-1/2 | y | (x,y) |
|---|---|---|---|
| 0 | 3/2( 0)-1/2 | -1/2 | ( 0, -1/2) |
| 1 | 3/2( 1)-1/2 | 1 | ( 1, 1) |
| 2 | 3/2( 2)-1/2 | 5/2 | ( 2, 5/2) |
| 3 | 3/2( 3)-1/2 | 4 | ( 3, 4) |
We found four ordered pairs that lie on the graph of our function.
Next, we will graph the ordered pairs and connect them with a straight line.
The line is the complete graph of the function. The ordered pairs corresponding to any points on the line are solutions of the equation y= 32x- 12.