Question 243429
Y=mX+b [b = the Y intercept.]
y=x-13 (red line)
The Y intercept = -13
y=3x-7 (green line)
The Y intercept = -7
{{{ graph( 300, 200, -6, 5, -15, 10, x -13, 3x -7) }}} (graph 300x200 pixels, x from -6 to 5, y from -15 to 10, of TWO functions x -13 and 3x -7).