What point is a solution of x+2y< 4

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'