Lisa is seven times as old as her brother. She will be four times as old as her brother in three years. Represent the above situ
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Answer:
The equation in point slope form is
Step-by-step explanation:
Since the swimming pool is being drained at a constant rate, the equation of the process must be a first-order polynomial (linear function), where depth of water decrease as time goes by. The form of the expression is:
Where:
- Time, measured in hours.
- Initial depth of the water in swimming pool (slope), measured in inches.
- Draining rate, measured in inches per hour.
- Current depth of the water in swimming pool (x-Intercept), measured in inches.
If and
, the initial depth of the water in swimming pool is:
The equation in point slope form is:
Where and
are initial depth of the water in swimming pool and initial time, respectively. Then, the equation in point slope form is: