Systems of equations with graphing

1 article
4 videos
1 skill
We already know that we can represent the set of all x-y pairs that satisfy a linear equation as a line. If there is a point where two of these lines intersect, then the x-y pair corresponding to that point must satisfy both equations. Common Core Standards: 8.EE.C.8, 8.EE.C.8a

Systems of equations with graphing

ARTICLE
Walk through examples of solving systems of equations by finding the point of intersection.

Systems of equations with graphing

VIDEO 8:30 minutes
Sal shows how to solve a system of linear equations by graphing and looking for the point of intersection.

Systems of equations with graphing: 5x+3y=7 & 3x-2y=8

VIDEO 6:35 minutes
Sal solves the system of equations 5x + 3y = 7 and 3x - 2y = 8 by graphing.

Systems of equations with graphing: y=7/5x-5 & y=3/5x-1

VIDEO 2:22 minutes
Sal graphs the following system of equations and solves it by looking for the intersection point: y=7/5x-5 and y=3/5x-1.

Systems of equations with graphing: chores

VIDEO 5:19 minutes
Graphical Systems Application Problem

Systems of equations with graphing

PRACTICE PROBLEMS
Graph a system of equations in slope-intercept or standard form, and find their solution using the graphs.