Two points on the graph of the linear function f are (0,6) and (4,8). Write a function g whose graph is a reflection in the x-axis of the graph of f.

Answer 1

The two point form: (8-6)/4 = (y-6)/x =>y = (1/2)x+6 is the equation of the line.

To reflect it in the x-axis, change y to -y, i.e. y = (-1/2)x - 6.