Find the equation of a line that contains the points (4, -2) and (-8, -1). Write the equation in slope-intercept form, using fractions when required.

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

The anwser cause i do not understand just plez

What is the sum of these mixed numbers 4 2/3+ 3 1/9