Algebra Expressions Study Guide

Write an expression for the following phrase. Use y for your variable.

She bought twice as much.

Write an expression for the following phrase. Use y for your variable.

The quotient of a number and 5

• y/5

• 5/y

• 5y

• y-5

Write an expression for the following phrase. Use y for your variable.

7 fewer than a number

Write an expression for the following phrase. Use x for your variable.

3 more than x

Evaluate each expression if

a = 7, b = 9 c = 2.

(a – c)³

Evaluate each expression if

a = 7, b = 9 c = 2.

3b-6

Evaluate each expression if

a = 7, b = 9 c = 2.

27÷3a−c

Evaluate each expression if

x = 2.2 , y = 1/2 .

3.1 + 2x

Evaluate each expression if

x = 2.2 , y = 1/2​ .

8y+6x

Harry made the input-output table shown.

Which of the following expressions is true for all values in Harry's table?

• 1x

• x+3

• 3x-1

• 2x+1