1 / 10

Quick Graphs Using Intercepts

Learn the efficient method of graphing lines using intercepts. Explore how to locate points, find x and y intercepts, plot solutions, and connect the dots to form a line graph swiftly.

jfultz
Download Presentation

Quick Graphs Using Intercepts

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. 4.3 Quick Graphs Using Intercepts

  2. Methods of graphing a line so far: 1. Locate points and connect the dots-do they make a line? 2. Horizontal and vertical lines y=b and x=a 3. Make a table to find solutions, plot the solutions, connect the points.

  3. The Quick Way: Find where the line crosses the x and y axis and connect the two points.

  4. X-intercept:the x-intercept of a line is the value for x when y=0 So, set y=0 in the equation and solve for x. Ax+By=C Ax+B(0)=C Ax=C Ordered pair results, x value and y=0 (x,0)

  5. Y-intercept:the y-intercept of a line is the value for y when x=0 So, set x=0 in the equation and solve for y. Ax+By=C A(0)+By=C By=C Gives the y value,ordered pair (0,y)

  6. DO NOT PUT THE X VALUE AND Y VALUE TOGETHER AS AN ORDERED PAIR!!!! YOU HAVE TWO DIFFERENT POINTS TO PLOT!! Now, graph two points and connect a line between them.

  7. Find the x-intercept & y-intercept and graph 2x+3y=12 When y=0 When x=0 2x+3y=12 2x+3y=12 2(0)+3y=12 2x+3(0)=12 3y=12 2x=12 y=4 x=6 (6, 0) (0, 4)

  8. Graph 6 (0, 4) (6, 0) 5 4 3 2 1 -4 -3 -2 -1 1 2 3 4 5 6

  9. Find the x & y intercepts and graph -4x+6y=18 When y=0 When x=0 -4x+6y=18 -4x+6y=18 -4(0)+6y=18 -4x+6(0)=18 6y=18 -4x=18 y=3 x=-4 ½ (-4 ½ , 0) (0, 3)

  10. Graph 6 (0, 3) (-4 ½ , 0) 5 4 3 2 1 -5 -4 -3 -2 -1 1 2 3 4 5 6

More Related