Question 140674
The proper equations for these 2 lines are; 
y=4x-1 (red line)
y=3x+15  (green line)
{{{ graph( 300, 200, -6, 25, -10, 80, 4x -1, 3x +15) }}} (graph 300x200 pixels, x from -6 to 25, y from -10 to 80, of TWO functions 4x -1 and 3x +15). 
ANSWER (16,63)