Graphs & Number of Solutions
Identifying and reasoning out the number of solutions for a system of equations that has two variables. Determining the number of solutions for a system of equations when represented graphically. Finding the solution for a system of equations represented algebraically or graphically. Solving the system of equations using the method of elimination and substitution.
Mapped to CCSS Section# 8.EE.C.8b
Solve systems of two linear equations in two variables algebraically, and estimate solutions by graphing the equations. Solve simple cases by inspection. For example, 3x + 2y = 5 and 3x + 2y = 6 have no solution because 3x + 2y cannot simultaneously be 5 and 6.
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