Lesson 4-2 Using Intercepts Obj: The student will be able to 1) Find x- and y-intercepts and interpret their meaning in real-world situations 2) Use x- and y-intercepts to graph lines HWK: p 240 13-15 all, 16-20 even, 22-23 all, 24-28 even Vocab: 1) y-intercept 2) x-intercept
Find the x- and y-intercepts
Ex 2) 3x – 2y = 12
Ex 3) The Sandia Peak Tramway in Albuquerque, New Mexico, travels a distance of about 4500 meters to the top of Sandia Peak. Its speed is 300 meters per minute. The function f(x) = 4500 – 300x gives the tram’s distance in meters from the top of the peak after x minutes. Graph this function and find the intercepts. What does each intercept represent?
Use intercepts to graph the line describes by each equation Ex 4) 2x – 4y = 8
Ex 5) 2 3 y = 4 - 1 2 x