
Systems of Linear Inequalities Word Problems
Presentation
•
Mathematics
•
9th - 12th Grade
•
Medium
Standards-aligned
Darin Brown
Used 19+ times
FREE Resource
7 Slides • 4 Questions
1
Systems of Linear Inequalities
Word Problems
Use a system of linear inequalities to model a real-life situation.
2
Word Problems
Most of these problems will not give you a slope and y
intercept.
You will not be writing inequalities in slope-intercept form.
You will be writing equations in standard form.
3
Standard Form Word Problems
Figure out what x and y represent
Write an inequality for each topic in the topic
4
Word Problem #1
You can work a total of no more then 41 hours each week at your two jobs. Housecleaning pays $5 per hour and your sales job pays $8 per hour. You need to earn at least $254 each week to pay your bills. Write a system of inequalities that shows the various numbers of hours you can work at each job.
5
Word Problem #2
Fuel x costs $2 per gallon and fuel y costs $3 per gallon. You have at most $18 to spend on fuel. Write and graph a system of linear inequalities to represent this situation.
6
Word Problem #3
A salad contains ham and chicken. There are at most 6 pounds of ham and chicken in the salad. Write and graph a system of inequalities to represent this situation.
7
Word Problem #4
Mary babysits for $4 per hour. She also works as a tutor for $7 per hour. She is only allowed to work 13 hours per week. She wants to make at least $65. Write and graph a system of inequalities to represent this situation.
8
Multiple Choice
What's the difference between systems of equations and systems of inequalities?
Systems of equations have 1 solution, no solution, or infinite solutions while systems of inequalities can have a range of solutions.
Systems of equations use slope-intercept form only while systems of inequalities use standard form only.
Systems of equations have a shaded region while systems of inequalities do not.
There is no difference.
9
Multiple Choice
1.5x+0.5y=78.5 x+y=87
1.5x+0.5y=78.5 1.5x+0.5y=87
x+y=78.5 1.5x+0.5y=87
x+y=78.5 x+y=87
10
Multiple Choice
Luka and Dana are making cookies for the Westland Pantry. They only have up to 6 hours to bake! They can bake 32 chocolate chip cookies in an hour (x), and 20 snickerdoodle cookies in an hour (y). They need to make at least 150 cookies. Which inequalities represent the situation?
x + y ≥ 6 32x + 20y ≤ 150
x + y ≥ 632 x + 20y ≥ 150
x + y ≤ 6 32x + 20y ≤ 150
x + y ≤ 6 32x + 20y ≥ 150
11
Multiple Choice
3.50 + 1.75t > 20
1.75 + 3.50t ≤ 20
3.50 + 1.75t ≥ 20
1.75t + 3.50 ≤ 20
Systems of Linear Inequalities
Word Problems
Use a system of linear inequalities to model a real-life situation.
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