1st Semester Final Review

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

Tags

CCSS.8.EE.C.8B

This system has _____ solutions

• 0
• 1
• 2
• Infinitely many

Tags

CCSS.8.EE.C.8B

What is the solution?

• One Solution

• No solution

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8B

Circle the solution to the systems of equations represented by the tables.

Answer explanation

The point is (2,-3) because that is the point that the tables have in common.

Tags

CCSS.8.EE.C.8B

On Monday Joe bought 10 cups of coffee and 5 doughnuts for his office at the cost of $16.50.  It turns out that the doughnuts were more popular than the coffee.  On Tuesday he bought 5 cups of coffee and 10 doughnuts for a total of $14.25.  How much does each cup of coffee and each donut cost?

Choose the "let" statements for this problem. 

• Let d = number of donuts

  Let c = number of cups of coffee

• Let d = price of a donut ($)

  Let c = price of a coffee ($)

• Let d = price of a donut

  Let c = price of a coffee

• Let d = the cost of coffee and donuts

Tags

CCSS.8.EE.C.8C

Gabby and Chris went on a scavenger hunt. Together they collected a total of 24 items. Chris collected 3 less than twice as many items as Gabby collected. Let g be the number of items Gabby collected and c be the number of items Chris collected. Which system of equations can be used to find the number of items each child collected?

Tags

CCSS.HSA.CED.A.3

Solve the following

y=-6x-10

y=5x+12

• (-2, 2)

• (2,2)

• (2, -2)

• (-1, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which is the best method to use?

y = 6x − 11

−2x − 3y = −7

• Graphing

• Substitution because a variable is isolated.

• Elimination because both equations are in standard form.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Will the solution (-3, -7) make the following system of equations a true statement? 
y = 4x + 5
y = x – 4

• YES
• NO