color(blue)("Slope(m)"=(Deltay)/(Deltax)=(y_2-y_1)/(x_2-x_1)
"Note:"Delta "means," color(orange)("change in"
"Now,substitute the values"
color(violet)((4,1)=(x_1,y_1)
color(violet)((3,7)=(x_2,y_2)
:. "Slope" =(7-1)/(3-4)
rarr6/(-1)
color(green)(rArr-6