Question 174095
Y=mX+b
4=5*3/3+b
4=15/3+b
4=5+b
b=4-5
b=-1 
y=5x/3-1 ans.
{{{ graph( 300, 200, -6, 5, -10, 10, 5x/3 -1) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 5x/3 -1).