Introduction to Expressions

5p + 4h - 2 Which are the variables? (hint: variables are not the numbers)

• 5p, 4h, 2

• 2

• p, h

• 5, 4

True or false?

Coefficients can sometimes be invisible. (hint is x the same as 1x?)

• True

• False

What are variables in math? (hint: not the numbers)

• Letters

• Numbers

• Expressions

What is the variable in 3x - 5

• x

• 5

• 3

5p + 4h - 2

Which of these are the variables?

• 5p, 4h, 2

• 2

• p, h

• 5, 4

What is the coefficient of x? (hint: the number that appears next to the variable or number)

8 + 5x - y

• 8

• 0

• 5

• -5

The number you see before a variable (Example: 6z, the 6 is the ________)

• coefficient
• variable
• term
• product

What are the variables in the following expression?

• 3, 4, 1 and 7
• z, x and y
• + and -
• 15

Find the coefficient in the algebraic expression.

• x

• 4

• 5

• 9

What is a variable?

• A letter or symbol standing for an unknown value

• Just another confusing algebra thing

• Nothing useful