# Q3, W9: February 28 – March 4 Pre-Algebra

Teacher Kristin Andreason Pre-Algebra 8 February 28 - March 4 Focus 9: Systems of Equations
Standard(s) Taught

MAFS.8.EE.3.8:  Analyze and solve pairs of simultaneous linear equations.
a. Understand that solutions to a system of two linear equations in two variables correspond to
points of intersection of their graphs, because points of intersection satisfy both equations
simultaneously.
b. Solve systems of two linear equations in two variables algebraically, and estimate solutions
by graphing the equations. For example, 3x + 2y = 5 and 3x + 2y = 6 have no solution
because 3x + 2y cannot simultaneously be 5 and 6.
c. Solve real-world and mathematical problems leading to two linear equations in two
variables.

Learning Targets and Learning Criteria

Identify the points of intersection as a solution to a system of linear equations.
Define the solution to a linear system of equations of equations as the intersection point on a graph.
Identify the graph of 0, 1, infinitely many solutions for a system of equations.
Use mathematical reasoning to solve simple system of linear equations.
Graph a system of linear equations to estimate the solution.
Solve real-world problems and mathematical problems dealing with systems of linear equations.
Interpret solutions in the context of a problem.

Classroom Activities

Monday/Tuesday:

• Students will do a Discovery Lab on Solving Systems of Equations by Graphing
• We will do some of IXL CC.1 together.
• Students will do IXL CC.2.

Wednesday:

• We will go review how we determine the number of solutions to a system of equations.
• Students will do IXL’s CC.4 and CC.5.

Thursday/Friday:

• We will do guided notes on Solving Systems of Equations by Substitution
• Students will do a worksheet on Solving Systems of Equations by substitution
Assignments Due
• IXL’s CC.2, CC.4, and CC.5
• Worksheet on Solving Systems of Equations by Substitution