Answer:
y = -5
Step-by-step explanation:
A line perpendicular to x = 5 is a horizontal line. Here this horiz. line passes through y = -5. This last result is the desired equation.
Answer:

Step-by-step explanation:

Answer:
x = 3/2 v - 3 (or x = 3v/2 - 3)
Step-by-step explanation:
v = 2/3 x + 2
v - 2 = 2/3 x
3/2 v - 3 = x
We can write a proportion
10,000 identical samples is 100 pounds
10 identical samples is x pounds
10000/10 = 100/x
10000x=10*100
x=1000/10000=1/10=0.1
x=0.1 pound
10 samples have the weight 0.1 pound.