Ineed plz and show prove this is for 13 points

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?  

Given: df and de are midsegments of abc prove: de=1/2 ac