Which of the following is an equation for a line perpendicular to y=⅔x-1 ? * A. y= -3⁄2x+6 B. -3x+2y=5 C. 4y=-9x D. 2y= -3⁄2x+1

Arandom high school question but a hard one

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points