Simplifying Expressions

In the expression 
5x + 7, the x represents the...

• Coefficient
• Variable
• Term
• Expression

y + 5x - 10

• coefficient 
• terms
• variables
• constant

x + y

• expression
• equation

2x + y = 1

• coeffiecient
• term
• variable
• constant

x + y = 50

• expression
• equation

How many terms are in the expression
5y - 3rx + 7

• 1
• 2
• 3
• 4

3y + 5

• term 
• variable 
• coefficient
• constant

5y + 10 - x

• term
• variable 
• constant
• operator

The coefficient in the following expression is:
x + y

• 0
• 1
• x
• y

How many terms in the following expression:
5x + 3y - 15 + x

• 1
• 2
• 3
• 4