Question

--> Econ Graph Review

a) The equation of the line passing through the points (5, 1) and (8, 2) is ay = x + b. Find the values for constants a and b. Represent this function in a xy plane.
b) Let L be the line passing through the point (4, 9) with slope 3/4. Represent this function using the y = mx + b formula. Find the y-intercept of L.
c) Graph the following two equations on the same graph by plotting points (show your work), y = 5 − x; y = x − 1. Algebraically verify that the intersection of the two lines is graphed correctly.
d) Consider the line given by: y = 20 − 4x. Without graphing, find the x-intercept and y-intercept of the line.

Answer 1

thus 31X- g.) point (4,9), m冫314, y_mxt , m-34, 6-6, 314 tuhen both cuts, then dex- 6- ax 123 tept, 3-4 5132 2×