1. Using Intercepts

2. Using Intercepts
y-intercept--the y-coordinate of the point where the graph intersects the y-axis. The x-coordinate of this point is always 0.
x-intercept-the x-coordinate of the point where the graph intersects the x-axis. The y-coordinate of this point is always 0.

3. Find the x and y intercepts of…
3x – 2y = 12
To find the x-intercept: replace y with 0 and solve for x.
3x – 2(0) = 12
3x = 12
x = 4
(4, 0)

4. 3x – 2y = 12 To find the y-intercept, replace the x with 0.
(0, -6)

5. Now graph those two points
(4, 0)
(0, -6)

6. Give the x and y intercepts…
Trish can run the 200 m dash in 25 s. The function f(x) = 200 – 8x gives the distance remaining to be run after x seconds. Graph this function and find the intercepts. What does each intercept represent?
5x – 2y = 10

7. Give the x and y intercepts…
Trish can run the 200 m dash in 25 s. The function f(x) = 200 – 8x gives the distance remaining to be run after x seconds. Graph this function and find the intercepts. What does each intercept represent?
x int = 25 y int = 200
x intercept means in 8 seconds the race is over
y intercept means in 0 seconds there are 200 m to run
x int = -2, y int = 1
5x – 2y = 10
x int = 2, y int = -5