Observe the graph :
Select the points from the graph and place them in a table.
Table :
Find the difference between the -values and diffrence between -values.
and .
and .
and .
The difference between the –values is , while the difference between the –values is .
Hence the equation is .
Check the solution by substituting -values in the function :
When ,
When ,
Therefore, the -values are not satisfied the equation.
Let us take some other values to find the equation :
Make a table:
From the table is always more than .
Therefore, should be added to get the pattern.
Hence the funcion is .
Check the solution by substituting -values in the function :
When ,
When ,
When ,
When ,
Therefore, the -values are satisfied the equation.
So, the function is .
The function is .
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