Slope-Intercept Worksheet Page 3
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3Slope-Intercept Form Notes
Real-World Examples:
13. You go to get your first cell phone. First you must pick a phone and then a monthly plan. The
equation �� = 35�� + 50 represents the total cost of owning the phone in terms of (as a function of)
how many months you have had the phone. Identify the slope and y-intercept, and state what each
represents in this situation.
Slope: _____ ____________________________ y-int: _____ ______________________________
(number)
(in words)
(number)
(in words)
14. Mary is having car trouble. When she goes to the mechanic, they tell her she will have to pay for
the part and the labor (by the hour). The equation �� = 45�� + 150 gives the total cost for the repairs
based on (as a function of) how long the mechanic has to work (labor) to fix the car. Identify the slope
and y-intercept, and state what each represents in this situation.
Slope: _____ ____________________________ y-int: _____ ______________________________
(number)
(in words)
(number)
(in words)
Real-World Examples from graphs:
15. Jason is in a bicycle race. The graph below represents the distance he has traveled from the
starting line compared to his time since the start of the race. Identify the slope and y-intercept from
the graph, and state what each represents for this situation. Then write the linear equation that gives
Jason’s total distance traveled as a function of time.
slope: _____ _______________________________________
(number)
(in words)
y-int: _____ ________________________________________
(number)
(in words)
Equation:
Time (hours)
16. The graph below shows the water level in a pool that is being drained for maintenance and
cleaning. Identify the slope and y-intercept from the graph, and state what each represents for this
situation. Then write the linear equation that gives the water level in the pool as a function of how long
the pool has been draining.
slope: _____ _______________________________________
(number)
(in words)
y-int: _____ _______________________________________
(number)
(in words)
x-int: _____ _______________________________________
(number)
(in words)
Time (hours)
Equation:
Write your SUMMARY and any lingering questions on the back.
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