Which side lengths form a right triangle

Remmi wrote the equation of the line y=⅓(x+2) he solved for x and got x=3y-2 which of the following is an equivalent equation for x? a.x=y-11/3 b.x=y+7/3 c.x=3(y-⅔) d.x=3(y+⅔)

What is best way to getting answer for my exam is

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2