Question 182243
(-2,-9) and (-1,-7)
slope=(y2-y1)/x2-x1)
slope=(-7+9)/(-1+2)
slope=2/1=2
Y=mX+b
-7=-1*2+b
-7=-2+b
b=-7+2
b=-5
Y=2-5x
{{{ graph( 300, 200, -6, 10, -10, 10, 2x -5) }}} (graph 300x200 pixels, x from -6 to 10, y from -10 to 10, 2x -5).