Which of the following is only a relation? {(1,2), (-1,2), (2,-3)}
{(1,2), (-1,-2), (2,-3)}
{(1,2), (-1,2), (1,-3)}

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

In the triangles, tr = ge and sr = fe. if = 3.2 ft, which is a possible measure of ? 1.6 ft 3.0 ft 3.2 ft 4.0 ft