Intro to Variables and Algebraic Expressions

The product of 7 and j increased by 3.

• 7j + 3

• 3j + 7

• 7(j+3)

Product of 4 and p

• 4/p

• 4p

• 4 + p

• p - 4

What are the variables of 7x+6y-9

• 6,7

• 9

• 6y, 7x

• x, y

y minus 12

• y + 12

• y - 12

• y x 12

• y / 12

Match the following vocabulary words to it's correct definition.

• Variable

• The number in front of the variable.

• Term

• A number by itself with no variable attached.

• Expression

• A number, a variable, or both.

• Coefficient

• A combination of terms.

• Constant

• A placeholder, usually a letter, to represent an unknown number.

Tags

6.13

Three times the sum of 2 and e. 

• 3e+2

• 3(e-2)

• 3(e+2)

• 2e+3

Amount you have spent if you buy a shirt for $20 and jeans for x dollars

• 20-x

• 20+x

• x-20

• 20x

A variable is a letter or symbol used to represent an unknown number.

• True

• False

Write an expression using a variable to represent the expression​ (a)  

g less than 8

• g-8

• g/8

• 8g

• 8+g

• 8-g

What expression does this number line represent?

• 4n - n

• 2n + n

• 8n - 2n

• 16n - 4n