Unit 7B Review

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Answer explanation

b= -1

m= 1/4

Tags

graphing from an equation

y=mx+b

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Answer explanation

The line should intersect at (0,5) and (6,0).

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• (-8,4)

• (4,-8)

• (-5,0)

• (0,8)

Answer explanation

The solution to this equation is where the two lines intersect.

Tags

CCSS.8.EE.C.8B

• (0,4)

• (-2,0)

• (3,4)

• (-4,3)

Answer explanation

The solution to a system of equations is found where the two lines intersect.

Tags

CCSS.8.EE.C.8B

• (1,0)

• (-6,4)

• (4,-6)

• (0,2)

Answer explanation

The solution to a system of equations is where the two lines intersect.

Tags

CCSS.8.EE.C.8B

• (5,0)

• (0,5)

• (8,0)

• (-8,0)

Answer explanation

The solution to a system of equations is where the two lines intersect.

Tags

CCSS.8.EE.C.8B

Lincoln and Khalil work at a dry cleaners ironing shirts. Lincoln can iron 15 shirts per hour, and Khalil can iron 10 shirts per hour. Lincoln and Khalil worked a combined total of 15 hours and ironed a total of 190 shirts. Which of the following systems of equations can be used to represent this situation?

Answer explanation

Hint: look for the words "total of (a number)" This tells you that you are looking for an equation that is equal to that number.

Tags

CCSS.HSA.CED.A.3

Ryan is working two summer jobs, making $15 per hour lifeguarding and $7 per hour washing cars. Last week Ryan worked 3 more hours lifeguarding than hours washing cars and earned a total of $199. Which system of equations can be used to represent this scenario?

Answer explanation

Hint: look for the words "total of (a number)" This tells you that you are looking for an equation that is equal to that number.

Tags

CCSS.HSA.CED.A.3

A law firm is going to designate associates and partners to a big new case. The daily rate charged to the client for each associate is $700 and the daily rate for each partner is $1500. The law firm assigned a total of 16 lawyers to the case and was able to charge the client a total of $16800 per day for these lawyers' services. Which system of equations could be used to represent this situation?

Answer explanation

Hint: look for the words "total of (a number)" This tells you that you are looking for an equation that is equal to that number.

Tags

CCSS.HSA.CED.A.3