Expressions vs Equations and Parts of Equations

What is the MOST IMPORTANT difference between an expression and an equation?

• they're spelled different

• an equal sign

• only equations have variables

• only expressions have variables

Which of the following is an algebraic EXPRESSION?

• 3 + 17 − k

• 3x − 45 = b

• 25x = 80

• 9m + 4 > 13

Which of the following is an EQUATION

• 3a² - 5a + 8

• 4a² + 7 = 31

• 2x + 9

• 7x + 10 > 52

x − 7 is _______

• an expression

• an equation

• neither an expression nor an equation.

7.25n + 24 = 390

is an ________________

• equation

• expression

• inequality

Given equation

y = 30x + 50

Which part is the

INITIAL VALUE?

• y

• 30

• x

• 50

Given equation

y = 30x + 50

Which part is the

TOTAL?

• y

• 30

• x

• 50

Given equation

y = 30x + 50

Which part is the

RATE?

• y

• 30

• x

• 50

Given the equation

135 + 65x = 2500

what does the

135

represent?

• Total

• Initial Value

• Rate

Given the equation

135 + 65x = 2500

what does the

65

represent?

• Total

• Initial Value

• Rate