evaluate expressions by substitution

Front

Evaluate 7y - 3y for y=2

Back

8

Front

Evaluate 3x + 8 if x = 2

Back

14

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

Evaluate m² if m = 5

Back

25

Front

Evaluate 4y if y = 3

Back

12

Front

What is substitution in algebra?

Back

Substitution is the process of replacing a variable with a number or another expression.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with given numbers.

Front

If x = 4, what is the value of 5x + 2?

Back

22

Front

Evaluate 10 - 2a if a = 3

Back

4

Front

What is the value of 6p if p = 1?

Back

6