Solving Systems of Linear Equations by Graphing and Substitution

A system of linear equations is...

• a set of two or more linear equations in the same variable.

• a set of four linear equations using the variables x and y only.

• a table of values where the y values have a constant rate of change.

• none of these

Tags

CCSS.HSA.REI.C.8

How can you tell if a point is a solution to a system?

• It makes the first equation true.
• The (x,y) coordinates satisfy both equations
• It makes logical sense
• It makes neither equation negative

The solution to a system of equations is any ordered pair that makes both equations true. 

• TRUE
• FALSE

Tags

CCSS.8.EE.C.8B

What is the
slope-intercept form
of the equation
-8x+2y=4

• none
• y=2-4x
• y=4x+2
• y=4x-8y

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

If m=3 and b=6, what is the correct slope intercept equation?

• none
• y=3x-6
• y=3x+6
• y=6x+3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

When you graph the exact same equation twice,

• you will have no solution. 
• you will have one solution.
• you will have infinite solutions. 
• you will graph a giraffe. 

Tags

CCSS.8.EE.C.8B

How many solutions will this system have? 

• No solution
• One Solution
• I Don't Know
• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8A

Which equation matches the graph? (Click me to see the image)

• y = 2x
• y = (1/4)x + 2
• y = 1x + 4
• y = -2x

The solution (x, y) to a system of equations is the point where they...? 

• Run off the graph
• Don't touch
• Intersect
• Exist

Tags

CCSS.8.EE.C.8B

Parallel Lines never intersect because...

• they have the same slopes. 
• they have the same y-intercept.
• they have different slopes.
• they have different y-intercepts. 

Tags

CCSS.HSA.REI.D.12