1. 5.2 Using Intercepts
Pg. 303

2. Objective
Find x- and y- intercepts and interpret their meanings in real world situations
Vocabulary
x – Intercept
Where graph crosses the x-axis
y – Intercept
Where graph crosses the y-axis

3. What does it mean to INTERCEPT a pass in football?
The path of the defender crosses the path of the thrown football.
In algebra, what are x- and y-intercepts?

4. What are the x- and y-intercepts?
The x-intercept
is where the graph crosses the x-axis.
The y-coordinate is always 0.
The y-intercept
is where the graph crosses the y-axis.
The x-coordinate is always 0.

5. Find the x- and y-intercepts
x-intercept: Plug in 0 for y
y-intercept: Plug in 0 for x

6. Find the x- and y-intercepts
x-intercept: Plug in 0 for y
y-intercept: Plug in 0 for x

7. Find the x- and y-intercepts
x-intercept: Plug in 0 for y
y-intercept: Plug in 0 for x

8. Find the x- and y-Intercepts. Special Cases
Find the x- and y-Intercepts ***Special Cases*** (x = constant, or y = constant)

9. What is the x-intercept of 3x – 4y = 24?
(3, 0)
(8, 0)
(0, -4)
(0, 8) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

10. What is the y-intercept of -x + 2y = 8?
(4, 0)
(-8, 0)
(0, 2)
(0, 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

11. What is the y-intercept of x = 3?
(3, 0)
(-3, 0)
(0, 3)
None 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

12. 1. Draw a sketch of the graph in the equation 2x + 3y = 12

13. Homework
Pg. 306, 2 – 28 Even
and 49 – 52 all