56+24x factor the sum of terms as a product of the gcf and a sum

Choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)

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?

Solve the equation by completing the square. x^2+2x=17