19. Graph the function y = kx for k = 1,2, , and 3. Observe the vertical stretching and shrinking compared to the first graph. Graph the function for k 2. Observe that the graph is the sa -2 as that obtained by stretching the reflection of y = r about the x-axis by a factor of 2. w

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!