The quantities of x and y are proportional x: 2,6,12 and y: 14,42,77 find the constant proportionally (r) in the equation y=rx

Find an equation of the line perpendicular to the graph.

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.