Systems of Equations. What you should be able to answer after learning about systems of...

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Systems of Equation s

Transcript of Systems of Equations. What you should be able to answer after learning about systems of...

Page 1: Systems of Equations. What you should be able to answer after learning about systems of equations….. A gym membership at one gym costs $10 every month.

Systems of Equations

Page 2: Systems of Equations. What you should be able to answer after learning about systems of equations….. A gym membership at one gym costs $10 every month.

What you should be able to answer after learning about systems of equations…..

A gym membership at one gym costs $10 every month plus a one-time membership fee of $15, and a gym membership at a another gym costs $4 every month plus a one-time $40 membership fee. After about how many months will the gym membership cost the same amount?

Page 3: Systems of Equations. What you should be able to answer after learning about systems of equations….. A gym membership at one gym costs $10 every month.

Definitions• A System of Linear Equations consists of two or

more linear equations that have the same variables.

• A Solution of a System of Linear Equations is any order pair that satisfies all the equations.

• A Consistent System has at least one solution.

• An Independent System has exactly one solution.

• A Dependent System has infinitely many solutions.

• An Inconsistent System has no solution.

Page 4: Systems of Equations. What you should be able to answer after learning about systems of equations….. A gym membership at one gym costs $10 every month.

Special Cases

• One Point of intersection.

• One solution

• Consistent

• Independent

• Different Slope

Page 5: Systems of Equations. What you should be able to answer after learning about systems of equations….. A gym membership at one gym costs $10 every month.

• The same line

• Infinitely many solutions

• Consistent

• Dependent

• Coincident Lines

• Same slope

• Same Intercept

Page 6: Systems of Equations. What you should be able to answer after learning about systems of equations….. A gym membership at one gym costs $10 every month.

• Parellel Lines

• No Intersection

• No Solution

• Inconsistent

• Same slope

• Different Y-Intercept

Page 7: Systems of Equations. What you should be able to answer after learning about systems of equations….. A gym membership at one gym costs $10 every month.

Steps to find solution

• Change both equations to slope intercept form (if needed)

• Graph the lines using the y-intercept and slope.

• Y = mx + b m = slopeb = y – intercept (starting point)