Question 168976
Y=mX+b
-3=6/7*6+b
-3=36/7+b
b=-3-36/7
b=(-3*7-36)/7
b=(-21-36)/7
b=-57/7 the y intercept.
y=6x/7-57/7 ans.
{{{ graph( 300, 200, -6, 15, -10, 10, 6x/7 -57/7) }}} (graph 300x200 pixels, x from -6 to 15, y from -10 to 10, 6x/7 -57/7).