Review 8

What is a solution to a system of linear equations?

• The point where both lines intersect

• The point where the y-axis and x-axis meet

• An ordered pair that both lines share

• A salt dissolved in water

What would the solution be to this system of linear equations?

• (0,-1.5)

• (1, -3)

• (5,0)

• (0,0)

What would the solution be to this system of linear equations?

• (0,0)

• (2,2)

• (6,0)

• (0,4)

When would we get "infinitely many solutions" to a system of equations?

• The lines are parallel, never intersecting

• The lines cross at one point

• The lines are the same and overlap at all points

• The lines cross at 2 points

When will we get "no solutions" from a system of equations?

• The two lines cross once

• The two lines are the same and overlap

• The two lines are parallel and never touch

• The two lines cross at 2 points

Match the following graphs to the systems of equations

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• Graph and find the matching graphs

Find the solution to the system

7x+4y =12 
x + 2y = -4

• (-4,4)
• (4,4)
• (4,-4)
• You can graph and find point of intersection or on calculator use menu 3, 2

Find the solution to the system

x + 2y = -4
x - 2y = 8

• (2,5)
• (2,-3)
• (2,-2)
• You can graph and find point of intersection or on calculator use menu 3, 2

Rewrite to slope intercept form

5x + 3y = 6

• y=-5/3x+2

• y=-5/3x+6

• y=-5/3x+1