Evaluating Expressions

Evaluating Algebraic Expressions

Objective: Evaluate an expression when given a variable

Review Time!

Identify the terms, coefficients, and constants in the following algebraic expressions.

Multiple Choice

What number represents a constant in the following algebraic expression:

$$4x-10$$

• 4
• -4
• 10
• -10

Multiple Choice

What number represents a coefficient in the following algebraic expression:

$$4x-10$$

• 4
• -4
• 10
• -10

Multiple Choice

How many terms in the following algebraic expression:

$$x+y+z$$

• 1

• 2

• 3

• 4

Multiple Choice

How many constants are in the following algebraic expression:

$$x+y+z$$

• 0

• 1

• 2

• 3

We call it the substitution method. You will "substitute" the number given with the variable. Then you evaluate.

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Evaluating an Expression

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Math Response

Evaluate the following algebraic expression:

$$2x\ when\ x=2$$

Type answer here

Correct Answer: 4

Deg^°

Rad

Math Response

Evaluate the following algebraic expression:

$$5x-10\ when\ x=8$$

Type answer here

Correct Answer: 30

Deg^°

Rad

Math Response

Evaluate the following algebraic expression:

$$x^2-5y\ when\ x=8\ and\ y=7$$

Type answer here

Correct Answer: 29

Deg^°

Rad

Math Response

CHALLENGE!

Evaluate the following algebraic expression:

$$3x^2-5y+z\ when\ x=4,\ y=2,\ and\ z=10$$

Type answer here

Correct Answer: 48

Deg^°

Rad