Substitute Variables to Determine Equivalency

m=8, n=6, p=4, q=2

Evaluate each expression below(substitute the variables)

m+n+q=

Evaluate each expression below(substitute the variables)

Evaluate 6p - 3  when p = 2

• 5

• 15

• 9

• 12

Evaluate 15 - m  for m = 7

• 22

• 8

• 2

• 9

Are the following expressions equivalent if y=4?

5y - 8 and 2(5y -4)

• Yes, they are equivalent.

• No, they are not equivalent.

Katie and Natalie each created an expression using models.  What would Natalie need to add to her model for it to be equivalent to Katie's model?

• positive chip

• positive chips

• negative chips

• negative chips

Use substitution to determine whether or not the expressions are equivalent.

3x + 2x + x and 7x

• equivalent

• not equivalent

What is the value of 2a - 3b + 6 when a = 2 and b = -5?

Mathematical Equivalence

ON

• Yes
• No

Are the following two expressions equivalent when x = 5?

3(x + 8) and 3x + 8

• Yes

• No