Question

in a flash of sheer brilliance, joseph invents a time machine! the machine uses a small nuclear reactor to generate the electricity it needs to travel back in time.
the graph shows the proportional relationship between how many years joseph wants to travel back in time, x, and how much electricity (in megawatts) his time machine needs, y.
what does the point h represent?
josephs time machine needs 10 megawatts of electricity to travel back 25 years.
josephs time machine needs 25 megawatts of electricity to travel back 10 years.

Explanation:

In a proportional relationship graph, the \(x -\)axis represents the number of years to travel back in time and the \(y -\)axis represents the electricity (in megawatts). Each point \((x,y)\) on the graph shows the pair of values for \(x\) (years) and \(y\) (megawatts). For point \(H\), we look at its coordinates. The \(x -\)coordinate of point \(H\) is \(25\) (years) and the \(y -\)coordinate is \(10\) (megawatts). This means when \(x = 25\) (years of travel back in time), \(y=10\) (megawatts of electricity needed).

Answer:

Joseph's time machine needs 10 megawatts of electricity to travel back 25 years.