In Exercises 15 to 26, graph y as a function of x by finding the slope and y-intercept of each line. 15. y = 2x - 4 ■16. y = -x +1 3 17. y 2³/x+1 19. y = -2x + 3 21. y = 3 23. y = 2x 25. y=x 18. y 20. y = 3x - 1 22. y = -2 24. y=-3x +4 26. y = -x

A line intersects the points (12, -2) and (6, -8). m = 1 Write an equation in point-slope form using the point (12, -2). y - [?] = (x-

Sketch a graph showing the line for the equation Y=2X-1. On the same graph (in a different color), show the line for Y= -X+8.