Solving Systems of Equations in Algebra 1

This video tutorial covers systems of equations, explaining what they are and how to solve them using different methods such as substitution, elimination, and graphing. It also provides techniques for graphing equations and setting up systems of equations from word problems. The tutorial includes practice problems and solutions to help reinforce the concepts taught.

What is a system of equations?

• A graph showing data points

• A mathematical formula for calculating interest

• A set of two or more equations with the same variables

• A single equation with one variable

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What does it mean to solve a system of equations?

• Finding values that satisfy at least one equation

• Finding a value that satisfies the first equation only

• Graphing the equations on the same axis

• Finding an ordered pair that makes all equations true

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to a system of equations with two parallel lines?

• One solution

• No solution

• Infinitely many solutions

• Two solutions

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CCSS.8.EE.C.8B

What does the point of intersection of two lines in a graph represent in a system of equations?

• An error in one of the equations

• The solution to the system of equations

• The sum of the two equations

• The difference between the two equations

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CCSS.8.EE.C.8B

What is the result of a system of equations if the lines are coincident?

• Two distinct solutions

• Infinitely many solutions

• Exactly one solution

• No solution

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CCSS.8.EE.C.8A

Which method is not a way to solve a system of equations?

• Substitution

• Elimination

• Graphing

• Division

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CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

How do you graph a line using the slope-intercept form?

• Draw a line that intersects the y-axis at the slope

• Plot the y-intercept and use the slope to find another point

• Use the slope as the y-intercept

• Plot the x-intercept and draw a line through the origin

When graphing y = x, what pattern do the points follow?

• A horizontal line

• A diagonal line from the top left to the bottom right

• A vertical line

• A diagonal line from the bottom left to the top right

In a word problem involving systems of equations, what do the two equations typically represent?

• Quantity and price

• Distance and time

• Quantity and money

• Speed and velocity

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CCSS.8.EE.C.8C

How can errors in a review material affect students' understanding of algebra?

• They can simplify the concepts making them easier to understand

• They can cause confusion and misinterpretation of concepts

• They have no effect on students' understanding

• They can improve understanding by introducing complexity

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