What is the equation of the line shown in this graph? A lot of points if answer

What is the equation of the line shown in this graph?

Through: (-3,-3) parallel to y= 7/3x+3

Parks is wearing several rubber bracelets one third of the bracelets are tie dye 1/6 are blue and 1/3 of the remainder are camouflage if park swears to camouflage bracelets how many bracelets does he have on

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9