Basic Letters Represent Numbers Algebra

What is a variable in Algebra?

• The answer to an equation

• An unknown value

• An equation

• A numeric expression

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

• 1

• 2

• 3

• 4

Equations must have an

• ≠

• =

• ≤

• ≥

In the term -4x, what is the number written exactly in front of x called?

What is an algebraic expression made of?

• Numbers and operations

• Numbers and multiplication

• Addition and multiplication

• Numbers and variables

y + 5x - 10

• coefficient 

• terms

• variables

• constant

____ is a type of mathematics that uses letters to represent numbers.

Solve for k,

k+6=14

• k=8

• k=20

• k=-20

• k=84

Solve for x,

x-11=7

• x=18

• x=-8

• x=-4

• x=4

Simplify 7x ( x + 1 )