Ted currently weighs 220 pounds and plans to lose 3 pounds a week through diet and
exercise.
Let y represents Ted's weight and x represents the number of weeks
Then we can write the following equation to model the above scenario.
[tex]y=220-3x[/tex]
The above equation will predict Ted's weight, y, after x weeks.
Note that we are subtracting 3x from 220 since
For example:
What would be Ted's weight after 6 weeks?
Substitute x = 6 into the equation
[tex]\begin{gathered} y=220-3x \\ y=220-3(6) \\ y=220-18 \\ y=202\: \text{pounds} \end{gathered}[/tex]
This means after 6 weeks, Ted's weight would be 202 pounds.
