Question

Math 126 Written Work-Modules 3 & 4 Name: Instructions: In this assignment, you will be solving equations using both algebra and the graphing calculator. Please show all work, when possible for full credit 1. a. Solve the equation ?-8x = 13, algebraically. Give exact answers. b. Which feature of the calculator will you be using to solve the equation graphically? (Circle one) INTERSECT or ZERO c. Define the equation(s) you are using for your graphical solution(s). Y1 = (if applicable) Y2 - d. Now solve the equation using your graphing calculator. Provide a sketch of the graph(s) below. Indicate the window settings in the provided box and indicate the solution(s) on your graph. Round your solution(s) to two decimal places, if necessary. Xmin: Xmax: Xsch Ymin: Ymax Yscl:

Answer 1

I a) we have equation -ox= 13 2 - 81 - 13 = 0 using quadratic equation formula, x= -6 + 6²-yac 2a here, a=1, b=-0, c= -13. Then 1= -(-8) + (-032-4(1)(43) 2013 8 + J116 = 8+ 2√29 2 4 ± √29 x= 4 + 129 4 -√29 solutions of the equation are the

b) to find the solution of the given equation graphically feature of the ome have to lused INTERS ECT Kalculator INTERSECT) 094 ZERO c) Then une equations Y = x² - 32 923 13 - fa To d)|| WINDOW Xmin Xmax Xsa Ymin Imax 5 -20 20 Iset 10

20 (-1.39, 13) (9.39, 13) 10- -10 -5 0 5 10 -10- 20