What is the constant of proportionality in the equation y = 5/4

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

Ill mark the brainliest if you me with the these three questions 7,8,9

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq