Ch. 1-4, 6 Review

Ch. 1-4, 6 Review

Assessment

Flashcard

Mathematics

8th Grade

Practice Problem

Hard

Created by

Wayground Content

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16 questions

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1.

FLASHCARD QUESTION

Front

What is a function in mathematics?

Back

A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.

2.

FLASHCARD QUESTION

Front

Identify a set of values that represents a function: (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4)

Back

(6,-5) (7, -3) (8, -1) (9, 1) is a function because no x-value is repeated.

3.

FLASHCARD QUESTION

Front

How do you calculate the perimeter of a square?

Back

The perimeter of a square is calculated by adding all four sides or using the formula P = 4s, where s is the length of one side.

4.

FLASHCARD QUESTION

Front

If a square picture frame has an area of 25 sq inches, what is the length of one side?

Back

The length of one side is 5 inches, since area = side², thus side = √25 = 5.

5.

FLASHCARD QUESTION

Front

What is the formula to calculate simple interest?

Back

Simple Interest = Principal × Rate × Time.

6.

FLASHCARD QUESTION

Front

If Josh borrows $7000 and repays $9187.50 in 5 years, what is the interest rate?

Back

The interest rate is 6.25%.

7.

FLASHCARD QUESTION

Front

How do you subtract mixed numbers?

Back

Convert mixed numbers to improper fractions, find a common denominator, subtract, and convert back to a mixed number if necessary.

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