Assume y varies inversely as x. If y = 60 when x = 80, find x when y = -20

x=0

Step-by-step explanation:

so we are going to first subtract by both sides,

x=80       y=60

  -20           -20

x=60     y=40

then again,

x= 60 y=40

  - 20    -20

x=40 y=20

and again,

x=40 y=20

 -20    -20

x=20 y=0

then lastly again,

x=20 y=0

 -20   -20

x=0   y=-20

ta da, hopefully this is helpful

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

what graph

step-by-step explanation: