1. Quizzes
Pencil and calculators only.

2. Objective: To identify the x- and y- intercepts. Standard 6.0

3. Intercepts X-Intercept: where the line crosses the x-axis
ordered pair: (x,0)
Y-Intercept: where the line crosses the y-axis
Ordered pair: (0,y)
Y-intercept
X-intercept

4. Example 1 State the x- and y- intercepts x-intercept: y-intercept:
(-4,0)
(0,2)

5. TOO State the x- and y- intercepts x-intercept: y-intercept: (3,0)
(0,6)

6. Will this vertical line ever cross the y-axis?
Example 3
State the x- and y- intercepts
x-intercept:
y-intercept:
(5,0)
none
Will this vertical line ever cross the y-axis? no

7. Cover up Method! If an equation is in standard form
ax + by = c a,b,c are all #’s
Cover up method:
To find x-intercept, cover up the y
To find y-intercept, cover up the x
Example: 5x + 4y = 20
y-intercept: (0,5)
x-intercept: (4,0)

8. Examples 5 & 6 6x + 3y = -18 y-intercept: (0,-6) x-intercept: (-3,0)

9. TOO Write the x- and y- intercepts as ordered pairs
3y = 2x x – 3y = 20
(0,4) (-6,0)

10. Review – Write an equation in point-slope
(-4,3) m = 1 7
(6,-2)(5,7)

11. Review – Write an equation in Standard Form
(5,-15)(11,-3)
y+5 = -4(x+1)

12. Review – Write an equation in Standard Form
(8,-7) m = undefined
(9,-2) m = 0

13. Homework
Pg. 350 #19-21 a & b, 22-27
Write the intercepts as an ordered pair
X-intercept: (#,0)
Y-intercept: (0,#)

14. Monster Problem Time!!