Algebra 1, 2008
Observe the figure, then make a table of ordered pairs.
x |
–4 |
–3 |
–2 |
–1 |
0 | 1 | 2 | 3 | 4 |
y |
–4 |
–3 |
–2 |
–1 |
0 | 1 | 2 | 3 | 4 |
The difference of the x values is 1, and the difference of the y values is 1.
The difference in y values is once the difference of x values.
Then the equation of the function f (x) = y = x.
The solution of the equation is y = x.
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