Question 398540
(1,4),(7,-1)
Y=mX+b is the line equation.
m=slope=(Y2-Y1)/(X2-X1)
b=thge Y intercept.
slope=(-1-4)/(7-1)=-5/6
y=-5x/6+b
4=-5/6*1+b
4=-5/6+b
b=4+5/6
b=(24+5)/6=29/6
y=-5x/6+29/6 ans.
{{{ graph( 300, 200, -6, 10, -10, 10, -5x/6 +29/6) }}} (graph 300x200 pixels, x from -6 to 10, y from -10 to 10, of TWO functions -5x/6 +29/6 ).