What is the slope of the line that passes through the points (1,2) and (0,4)?

Np4=12np2 with clear explanation.

An angle that measures between 90 and 180° is called a(,

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y