2. Perpendicular to y=1/3X-5 and goes through the point (3, -5)

Step-by-step explanation:

To be perpendicular the product of the two slopes is equal to negative one.

m1(m2)=-1, in this case the slope of the reference line is 1/3 so the other line will have a slope

m/3=-1

m=-3 so our perpendicular line is

y=-3x+b, using point (3,-5) we can solve for the y intercept b

-5=-3(3)+b

-5=-9+b

b=4 so the completed perpendicular line passing through point (3,-5) is

y=-3x+4

we are given scale of 2 units.

on graph paper the space is 2.5 cm.

length of glass = 8 units.

8 units = 2 units +2 units +2 units +2 units.

each 2 unit is = 2.5cm.

therefore,

8 units = 2 units +2 units +2 units +2 units = 2.5+2.5+2.5+2.5= 10cm.