210 Chapter 2 Linear Equations in Two Variables and Functions x 5 4 3 2 1 54 3 1 2 3 4 5 y 1 2 3 4 5 4 3 2 1 f (x) 5x 1 54 321 1 2 3 4 5 1 2 3 4 5 21 y x f(x) 2x 4 5 Figure 2-42 b. To find the y-intercept, evaluate f(0). Substitute The y-intercept is f102 10, 42. 4 c. This function is linear, with a y-intercept of an x-intercept of (2, 0), and a slope of 2 (Figure 2-42). Skill Practice Consider f (x) 7. Find the x-intercept. 8. Find the y-intercept. 9. Graph the function. 5x 1. 10, 42, f102 x 0. 2102 4 Answers 7. 8. 9. 115 , 02 10, 12 Calculator Connections Topic: Finding x- and y-Intercepts Refer to Example 4 with f(x) 2x 4.To find the y-intercept, let x 0.We can do this using the Value key. To find the x-intercept, use the Zero feature.To use this feature you must give bounds for the x-intercept.To find a left bound, place the curser to the left of the x-intercept and press Enter. For the right bound, place the curser to the right of the x-intercept and press Enter. Then make a guess by placing the curser near the x-intercept. Press Enter and the x-intercept will be displayed.
miller_intermediate_algebra_4e_ch1_3
To see the actual publication please follow the link above