Question 186214
(1,-5) and (-2,-20)
slope=(y2-y1)/(x2-x1)
slope=(-20+5)/(-2-1)
slope=-15/-3
slope=5 ans.
Y=mX+b
-5=5*1+b
-5=5+b
b=-5-5
b=-10 ans. for the y intercept.
y=5x-10
{{{ graph( 300, 200, -6, 5, -20, 10, 5x -10) }}} (graph 300x200 pixels, x from -6 to 5, y from -20 to 10, 5x -10).