Unit 6 review (math 1)

The following equation has __________ solutions

• One solution

• Infinite solutions

• no solutions

• two solutions

What is the solution to the graphed system?

• (-2,0)

• (-1,6)

• (1,4)

• (3,5)

The system of equations has _________ solutions. Why?

• Who knows? Did we cover this?

• One solutions (5,3)

• Infinite solutions because the slopes match.

• No solutions because it has the same slope and different y intercepts.

Ashley owns her own landscaping business. She earns $20 for each job and $10 an hour for labor. If h represents hours and T represents her total income, which equation matches her business?

• T=20+10h

• H=20+10T

• T=10+20h

• H=20+10T

Without a calculator, what is the best way in which to solve the system of equations?

• Elimination because the x values cancel.

• Substitution because the y in the first equation is isolated.

• Substitution because the x in the second equation is alone.

• Graphing because both equations are in y=mx+b form

Which point would be a solution to the system of inequalities?

• (1,5)

• (10,2)

• (-5,1)

• (-2,-3)

Which inequality is graphed?

• y>1/2x-4

• y<1/2x +4

• y>2x+4

• y<2x+4

Solve the following with substitution. Write it out! You have been given enough time:)

• (2,4)

• (-1,3)

• (5,7)

• (-4,3)

How does a system of equations with no solution look on a graph?

• Intersecting lines

• parallel lines

• one continuous line

• many lines crossing in all different directions

How does a system of equations with infinite solutions look on a graph?

• Intersecting lines

• Parallel lines

• One line

• Many different lines intersecting at many different points.