1 / 15

Graphing linear equations and functions

Graphing linear equations and functions. Carly Cofer. 4.1 : The cartesian cooridinate system. Origin. X ~ Axis. Y ~ Axis. Quadrants. Quadrant II ( - , + ). Quadrant I ( + , + ). Quadrant III ( - , - ). Quadrant IV ( + , - ). To plot a point….

phoebe-patel
Download Presentation

Graphing linear equations and functions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Graphing linear equations and functions Carly Cofer

  2. 4.1 : The cartesiancooridinate system Origin X ~ Axis Y ~ Axis

  3. Quadrants Quadrant II (-,+) Quadrant I (+,+) Quadrant III (-,-) Quadrant IV (+,-)

  4. To plot a point… • Every point is written in the form ( X , Y ) • To plot the point, begin at the origin • Move horizontally along the X ~ Axis to the designated X coordinate • Than move vertically along the line of the X coordinate to the designated Y coordinate • ( 4 , -3 )

  5. Lets try it out! • ( -6, 3) • ( -9, -2) • ( 5, -2) • ( 7, 4 ) • ( 0, 8 ) • ( -10, 0)

  6. Lets try it out! Quadrant II (-,+) Quadrant I (+,+) • Without plotting the points, can you figure out what quadrant these points lie in? : • ( -7, -5) • ( 8, 1 ) • ( -9, 4) • ( 6, -3) Quadrant IV (+,-) Quadrant III (-,-)

  7. Scatter Plots • A Scatter Plot is a specific type of graph which has multiple sets of coordinate pairs • These pairs of points are typically organized in a data table • Each pair is plotted on the same graph • This type of graph is often used to interpret data and trends in real world applications

  8. Scatter Plots Scatter Plot Data Table

  9. real world Example Create a scatter graph for the data table Number of teens with cell phones 1000 900 800 700 600 500 400 300 200 100 0 13 14 15 16 17 18 19 20 21 22

  10. real world Example Cell phone scatter graph 1000 900 800 700 600 500 400 300 200 100 0 • Interpretation of the data : • 1~ At what age do the greatest amount of teens have cell phones? • 2~ At what age do the least amount of teens have cell phones? • 3~ How many 14 year olds have cell phones? • 4~ What is the greatest amount of cell phone carrying teens at any age? • 5~ What is the least amount of cell phone carrying teens at any age? • 6~ About how many 17.5 year olds have cell phones? 13 14 15 16 17 18 19 20 21 22

  11. Lets try it out! 10 9 8 7 6 5 4 3 2 1 0 • Lets try a real world example of our own! • Cell phone service providers • Interpretation of the data : • 1~ What provider(s) is used by the greatest amount of students? • 2~ What provider(s) is used by the least amount of students? • 3~ How many students use Verizon? • 4~ What is the greatest amount of students using the same provider? • 5~ What is the least amount of students using the same provider? A V T M C S O

  12. In class exercises • Page 206 • 3, 4, 5, 6, 7 & 8

  13. On the calculator • 2nd Y = [STAT PLOT] • 1 : Plot1…On • Make sure Plot1 is in the on position • GRAPH • STAT • 1 : Edit • For L1, enter in the X values • For L2, enter in the Y values • WINDOW • Adjust values for • Xmin, • Xmax • Xscale • Ymin • Ymax • Yscale

  14. try it yourself! • Page 206 • 10, 12, 16, 18, 20, 22, 24 & 25 Good Luck!

  15. Works cited • "Coordinate Grids." Chart. ClipArt ETC. First Last. Web. 23 Oct 2011. <http://etc.usf.edu/clipart/galleries/math/coordinate_grids>. • Larson, Ron on, Laurie Laurie Boswell, and Timothy Timothy D. Kanold. Algebra 1. McDougal Littell/Houghton Mifflin, 2006. 202~209. Print.

More Related