Can you please help me with these Algebra word problems?

Complete the following word problems.

1. Tell whether the table represents inverse variation. If so, write the inverse variation equation and solve for y when x = 4. Show work that supports your conclusions.

Table:

Amperes (x): 310, 124, 62, 15.5
Ohms (y): .04, 0.1, 0.2, 0.8

2. It takes 9 hours for Isabella to rake leaves by herself, but her brother Matthew can work three times as fast. If they work together, how long will it take to rake leaves?

Thank you for your help.

1 answer

Without actually checking, I'd have to say it better be yes. (Ohm's Law).

Having said that, since amps*ohms is constant,

4y = .1*124
y = 3.1