You can put this solution on YOUR website! y=8x-14 (red line)
A parallel line passing through (0,8.4) will have a slope=8
8.4=8*0+b
8.4=b which is the y intercept.
y=8x+8.4 (green line) (graph 300x200 pixels, x from -6 to 5, y from -15 to 10, of TWO functions 8x -14 and 8x +8.4).