Is this linear? (-4,3) (-4,-3) (2,0) (0,2)

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?