5.5 finding intercepts.notebook
March 30, 2017
5.5 x and y Intercepts
To find the x­intercept you plug in 0 for y.
We can graph linear functions quickly by finding the x­intercept and the y­intercept.
To find the y­intercept you plug in 0 for x.
Example:
x­intercept: the x­coordinate of a point where a graph crosses the x­axis. (#, 0)
x­intercept
2x + 3y = 12
y­intercept
(4, 0)
(0 , ­2)
y­intercept: the y­coordinate of a point where a graph crosses the y­axis. (0, #)
x ­ 2y = 4
Sep 20­11:15 AM
Find the x­intercept and y­intercept.
5x + 3y = 15
Feb 23­7:17 AM
Find the x­intercept and y­intercept.
Mar 4­1:20 PM
Graph the line going through these intercepts.
1. x­intercept: 4 y­intercept: 3
2. (2, 0) ; (0, 5) 2x ­ 4y = 8
Mar 4­1:20 PM
3. a) Find the x and y intercepts to 5x - 2y = 20.
b) Graph the line using these intercepts.
x-intercept
y-intercept
Dec 5­10:26 AM
Nov 13­8:01 AM
1
5.5 finding intercepts.notebook
4. a) Find the x and y intercept for 4x + 2y = 20.
b) Graph the line.
March 30, 2017
Graph each equation using x and y intercepts.
5. x ­ 2y = 2
x-intercept
y-intercept
Nov 13­8:05 AM
Dec 5­10:24 AM
Classwork: p.326 #8 - 13 all ( on notebook paper)
#17 - 22 all (on graph paper)
6. 2x ­ 5y = ­20
Final Five
Find the x and y intercepts.
2x ­ 8y = ­16
Oct 13­10:22 AM
Nov 13­8:18 AM
2