Equivalent Expressions Substitution

two different ways to write the same expression

• equivalent expressions

• equivalent fractions

• equivalent expressions

• expression

• evaluate

replacing a variable with a number or expression

• equivalent fractions

• substitution

• evaluate

• equivalent expressions

• similar figures

Substitution: If y = 7, what is the value of 4y - 3?

• 15

• 25

• 10

• 20

Equivalent expressions: Are 2y - 7 and -7 + 2y equivalent expressions?

• Maybe

• Yes

• No

• Not sure

Select the expression equivalent to 12x + 4 - 3x-2

• 9x + 6

• 15x + 2

• 9x + 2

• 7x

• 2

• 4

• 8

Equivalent expressions: Are 4a + 2b and 2b + 4a equivalent expressions?

• No

• Maybe

• Only if a = b

• Yes

If x = 3, what is the value of 2x + 5?

• 7

• 11

• 9

• 15

Substitution: If a = 2 and b = 5, what is the value of 3a + 2b?

• 25

• 10

• 7

• 16

Equivalent expressions: Are 5x + 3 and 3x + 5 equivalent expressions?

• Maybe

• Yes

• No

• Not sure