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Grade 9 Math Starter Lesson: Systems of Linear Equations

By Newsela Staff
Last updated 3 months ago
6 Questions
Note from the author:
In this lesson, you will setup and solve a system of equations in order to solve a real-world problem.

Essential Question: How do I use systems of equations to solve real-world problems?
In this lesson, you will setup and solve a system of equations in order to solve a real-world problem.

Essential Question: How do I use systems of equations to solve real-world problems?
3.
Let p be the number of pennies and q be the number of quarters.

If the total value of the coins is \$68.00, fill in the blanks to write an equation representing the value of coins in the picture:
0.25_______ +_______ p = _______
4.

Let p be the number of pennies and q be the number of quarters.

If there are 560 total coins in the video, write an equation to represent the total number of coins.

5.

Let the number of quarters be represented by the y-axis and the number of pennies by the x-axis.

Graph your system of equations on the coordinate plane.

  • Click the graph tab.
  • Click on the graph background to add a point. Add two points to create a graph. Drag a point or type in x and y coordinates to edit its position. Click on a point to delete it.
6.
Determine the number of each coin in the video.

There were _______ quarters and _______ pennies.