do now. you have 5 minutes
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Do Now. You have 5 minutes. 1. Jenny has saved $25 to buy a new pair of shoes. Each month, she saves $5 towards the shoes. Which expression could be used to find the total amount saved after m months?
a. 5mb. 25 + 5mc. 25m + 5d. 25m + 5m
2. The cost to rent a laptop from Best Buy is $20 plus $10 per hour. Write an expression to find the total cost for any number of hours.
Today’s Objective
SWBAT graph ordered pairs on the coordinate plane.
Introduction to Graphing: terms for those in the know1. When graphing points: you can locate a point by using a
coordinate system similar to the grid of a park (or
Washington, DC) – put up map of Washington, DC.
2. The grid is called: Coordinate plane
3. Y-axis: the y-axis the vertical number line
4. X-axis: the horizontal number line
5. Quadrants: four sections of the coordinate plane
6. Origin: the point of intersection of the two number lines
Intro to Graphing: Ordered Pairs
• You can graph any point on the coordinate plane by using an ordered pair. (3,2)• The first number in the ordered pair is the x-
coordinate.• The second number is the y-coordinate. • Steps to name an ordered pair: 1. Start at the origin2. Move right to find the x-coordinate3. Move up to find the y-coordinate
Review Material:
• Brain Pop: http://www.brainpop.com/math/geometryandmeasurement/coordinateplane/
Guided Practice: White Boards
1. Draw y-axis2. Draw x-axis3. Put a star at the origin4. Number -3 to 3 on the x-axis5. Number -3 to 3 on the y-axis6. Graph the ordered pair (3, 2)7. Graph the ordered pair (-2, 1)8. Graph the ordered pair (1, -2)9. Graph the ordered pair (-1, -3)
Independent Practice• Pg. 278: 1-11• Computer users: first take the Review Quiz on
Brain Pop; after you have completed this, take the Graded Quiz. Review your answers and write down how many you got correct.
Tonight’s Homework: • Pg. 279: 12 – 33 (odds only) – for the problems that ask you to
graph each ordered pair on a coordinate plane, you will need to draw your own coordinate plane.
Exit Ticket:
1. Draw a coordinate plane.
a. Label the x-axisb. Label the y-axisc. Label the origind. Graph the point
(1,3)
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