Question

lee invents a time - machine! the machine uses a small nuclear reactor to generate the electricity it needs to travel back in time. there is a proportional relationship between how many years lee wants to travel back in time, x, and how much electricity (in megawatts) his time - machine needs, y.

x (years)	y (megawatts)
7	14
9	18
10	20

write an equation for the relationship between x and y. simplify any fractions.
y =

Explanation:

Step1: Find the constant of proportionality

$\frac{y}{x}=\frac{10}{5} = 2$

Step2: Write the equation

$y = 2x$

Answer:

$y = 2x$