Quiz about 8th Grade Unit 4 Pre-Test/Study Guide

Question 1

In a child's bank are 11 coins that have a value of S1.85. The coins are either quarters or dimes. How many coins each does child have?

Accepted Answer

5 quarters

6 dimes

Answer

6 quarters

5 dimes

Answer

11 dimes

1 quarter

Answer

7 quarters

4 dimes

Question 2

Kevin and John started with the same number of baseball cards in their collections. Kevin collected 4 cards per week and now has 32 cards. John collected 3 cards a week and now has 24 cards. Let $$x$$ represent the number of cards they began with, and let $$y$$ represent the number of weeks. Which system of equations represents this situation?

Accepted Answer

$$x+4y=32$$

$$x+3y=24$$

Answer

$$x+4y=24$$

$$4x+3y=24$$

Answer

$$x+3y=32$$

$$x+4y=24$$

Answer

$$7y=56$$

$$x+7y=56$$

Question 3

Shreya bought 11 pairs of pants for a total

of $780. Dress pants cost $60 and jeans

cost $80. How many of each type of pants

did she buy?

Accepted Answer

5 dress pants and 6 jeans

Answer

9 dress pants and 2 jeans

Answer

8 dress pants and 3 jeans

Answer

8 dress pants and 2 jeans

Question 4

Look at the system of equations graphed. What is the solution for the system of equations?

Accepted Answer

(-1, 3)

Answer

No Solution

Answer

(1, -3)

Answer

(3, -1)

Question 5

Solve the following systems of equations:

$$3x+4y=1$$

$$2x+8y=6$$

Accepted Answer

(-1, 1)

Answer

(1, 2)

Answer

(-1, 2)

Answer

(2, -1)

Question 6

All 119 students in the Math Club went on a field trip. Some students rode in cars which hold 3 students each and some students rode in vans which hold 13 students each. How many of each type of vehicle did they use if there were 13 vehicles total?

Accepted Answer

5 cars and 8 vans

Answer

10 cars and 3 vans

Answer

11 cars and 2 vans

Answer

9 cars and 4 vans

Question 7

Consider the systems of equations show below.

$$y=x+1$$

$$y=\frac{1}{4}x-2$$

Which graph represents the solution to the system?

Accepted Answer

Question 8

Place two values to correctly complete the sentence.

A system of equations is graphed on a coordinate grid.

The best approximation of the x-value solution is _______ and the best approximation of the y-value is _______.

Accepted Answer

x = 4

y = -1

Answer

x = -1y= 4

Answer

x = -4

y = -1

Answer

x = 1

y = -4

Question 9

Solve by elimination:

$$9x+9y=-18$$

$$x+3y=8$$

Accepted Answer

(-7, 5)

Answer

(-7, -5)

Answer

(7, 5)

Answer

(7, -5)

Question 10

This system of equations is:

Accepted Answer

Parallel/inconsistent

Answer

Perpendicular/inconsistent

Answer

Parallel/consistent

Answer

Perpendicular/consistent

Question 11

This system of equations is __________ and is _________.

Accepted Answer

Neither Parallel or Perpendicular/consistent

Answer

Neither Parallel or Perpendicular/inconsistent

Answer

Perpendicular/Consistent

Answer

Perpendicular/Inconsistent

8th Grade Unit 4 Pre-Test/Study Guide

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