A graph has month on the x-axis and saved (money) on the y-axis. Points are at (0, 3,000), (2, 2,450), and (5, 1,625). The instructor’s friend also plans to rent an apartment in the same complex. Use the graph to identify the y-intercept and the slope used to write the equation in slope intercept form. y-intercept = ? Slope = ? Linear equation = ?
the y-intercept: look at the graph - where does the graph intersect the y-axis? the slope: using the graph, take two points and calculate rise/run. however, since the graph didn't copy over, we could also use the slope formula m = (y2-y1) / (x2-x1) where you pick any point on the graph to be your (x1,y1) and any other point to be (x2,y2) once you have your y-intercept (b), and your slope (m) plug the values into y = mx + b
Join our real-time social learning platform and learn together with your friends!