1 / 13

Warm Up

Warm Up. Are the following equations linear? Make a table of at least 4 values to determine if it is linear. Sketch a graph if necessary. x + y = -3 3x – 1 = y 2y = 12 y = -3x - 4. Objective The student will be able to:. find the slope of a line given a graph.

storm
Download Presentation

Warm Up

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. Warm Up Are the following equations linear? Make a table of at least 4 values to determine if it is linear. Sketch a graph if necessary. x + y = -3 3x – 1 = y 2y = 12 y = -3x - 4

  2. ObjectiveThe student will be able to: find the slope of a line given a graph. Designed by Skip Tyler, Varina HS and Vicki Hiner, Godwin HS Adapted by Anita Laabs, Lodi MS

  3. What is the meaning of this sign? • Icy Road Ahead • Steep Road Ahead • Curvy Road Ahead • Trucks Entering Highway Ahead

  4. 7 feet 7% 100 feet What does the 7% mean? 7% is the slope of the road. It means the road drops 7 feet vertically for every 100 feet horizontally. So, what is slope??? Slope is the steepness of a line.

  5. Slope can be expressed different ways: rise vertical change m = = run horizontal change A line has a positive slope if it is going uphill from left to right. A line has a negative slope if it is going downhill from left to right.

  6. 1) Determine the slope of the line. When given the graph, it is easier to apply “rise over run”.

  7. Determine the slope of the line. Start with the lower point and count how much you rise and run to get to the other point! rise 3 = = run 6 6 3 Notice the slope is positive AND the line increases!

  8. Determine the slope of the line shown. • -2 • -½ • ½ • 2

  9. Determine the slope of the line. -1 Find points on the graph. Use two of them and apply rise over run. 2 The line is decreasing (slope is negative).

  10. Draw a line through the point (2,0) that has a slope of 3. 1. Graph the ordered pair (2, 0). 2. From (2, 0), apply rise over run (write 3 as a fraction). 3. Plot a point at this location. 4. Draw a straight line through the points. 1 3

  11. Practice • Draw a line that passes through (2,3) and has a slope of 2 • Draw a line that passes through (-3,5) and has a slope of ½.

  12. Find the Slope Rise 5 Run 3 Slope = 5/3

  13. Find the Slope Rise 3 Run 1 Slope 3/1 = 3

More Related