Information about 01 02 Identify & Use Variables

Published on August 28, 2008

Author: sadiesattic

Source: slideshare.net

Vocabulary Variable A number represented by a letter. Number can change. Expression Mathematical phrase Incomplete sentence Variable Expression A mathematical phrase that contains at least one variable. 06/04/09 PH 1-2 Bitsy Griffin

Variable

A number represented by a letter.

Number can change.

Expression

Mathematical phrase

Incomplete sentence

Variable Expression

A mathematical phrase that contains at least one variable.

Vocabulary Equations & Inequalities Complete mathematical sentences. Term (Terms) # Variable Product/quotient of a number Product/quotient of a number & variable Separated by a + or a - 06/04/09 PH 1-2 Bitsy Griffin

Equations & Inequalities

Complete mathematical sentences.

Term (Terms)

#

Variable

Product/quotient of a number

Product/quotient of a number & variable

Separated by a + or a -

Term Examples 06/04/09 PH 1-2 Bitsy Griffin

# of Terms? 06/04/09 PH 1-2 Bitsy Griffin

Problem 1 The weight of the truck is two times the weight of the car. Assign the Variables: Truck Car Is Equation 06/04/09 PH 1-2 Bitsy Griffin > T > C > = > 2C=T OR T=2C

The weight of the truck is two times the weight of the car.

Assign the Variables:

Truck

Car

Is

Equation

> T

> C

> =

> 2C=T OR T=2C

Problem 2 Four quarts are equal to one gallon. Assign the variables: Quarts Gallons Equation 06/04/09 PH 1-2 Bitsy Griffin > Q > G > 4Q=G OR G=4Q

Four quarts are equal to one gallon.

Assign the variables:

Quarts

Gallons

Equation

> Q

> G

> 4Q=G OR G=4Q

Problem 3 The mass of Jupiter is 317.8 times the mass of Earth. Assign the variables Write the equation > J=317.8 E 06/04/09 PH 1-2 Bitsy Griffin

The mass of Jupiter is 317.8 times the mass of Earth.

Assign the variables

Write the equation

> J=317.8 E

Write Equations 1 Tapes= Cost= Equation = 06/04/09 PH 1-2 Bitsy Griffin T C C=7.50T Tapes Cost 1 7.50 2 15.00 3 22.50 4 30.00

Tapes=

Cost=

Equation =

T

C

C=7.50T

Write Equations 2 Hours= Pay= Equation = 06/04/09 PH 1-2 Bitsy Griffin H P P=7H Hours Pay 4 28.00 6 42.00 8 56.00 10 70.00

Hours=

Pay=

Equation =

H

P

P=7H

Write Equations 3 Gallons= Miles= Equation = M=25G This is an odd equation. We usually think in miles per gallon. 06/04/09 PH 1-2 Bitsy Griffin Gallons Miles 3 75 5 125 7 175 9 225

Gallons=

Miles=

Equation =

M=25G

This is an odd equation.

We usually think in miles per gallon.

Write Equations 4 Pizzas Eaten= Pizzas Left = Equation = 06/04/09 PH 1-2 Bitsy Griffin PE PL PL=25 - PE This one wasn’t so easy! I had to notice that it was subtraction! Pizzas Eaten Pizzas Left 0 25 6 19 9 16 18 7

Pizzas Eaten=

Pizzas Left =

Equation =

PE

PL

PL=25 - PE

This one wasn’t so easy! I had to notice that it was subtraction!

Review Variable Expression Equation Variable Expression Term Inequality 06/04/09 PH 1-2 Bitsy Griffin

Variable

Expression

Equation

Variable Expression

Term

Inequality

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