Housekeeping

Last week we learned about slope and looked at how to graph an equation in slope intercept form.

Did you complete the formative assessments???

Unit 5 Summative – Thursday!!!

End of the semester – December 18th

Learning Target:Solve a system of linear equations by graphing

Unit 5: Lesson 4Solving a System by Graphing

Goal for today….Goals:

Identify the possible solutions to a system of equations

Solve a system of equations graphically

Agenda:

Review slope Possible solutions to a

system of equations Solve a system by graphing

Graphing a Linear Equation

Writing a Linear EquationA line’s slope is 8 and its y-intercept is 3. What is the equation in slope-intercept form?

Writing a Linear Equation

Solutions to a System of Equations

What is a system of equations?A collection of two or more equations with a same set of unknowns.

y = 3x – 2y = -x – 6

What do you think?If you graph two lines on the same coordinate plane, they will eventually cross at a certain point.

What are the possible solutions to a system of linear equations?

What are the possible solutions to a system of linear equations?

What are the possible solutions to a system of linear equations?

What are solutions to the equation?y = x

What are solutions to the equation?y = 2x - 2

What are solutions to the system of equations?

y = xy = 2x - 2

Wrap Up

Questions????

What should you do now? Check out the videos in the lessons tab IXL Practice – Y.2 Solve a System of Equations by

Graphing

In today’s lesson you learned to identify the possible solutions to a system of equations and

solve the system of equations graphically.