Select all the sets that are the three side lengths of right triangles.

For each pair of numbers, which of the two numbers is larger? How many times larger?

1. \(12 \boldcdot 10^9\) and \(4 \boldcdot 10^9\)
2. \(1.5 \boldcdot 10^{12}\) and \(3 \boldcdot 10^{12}\)
3. \(20 \boldcdot 10^4\) and \(6 \boldcdot 10^5\)

A line contains the point \((3,5)\). If the line has a negative slope, which of these points could also be on the line?

Noah and Han are preparing for a jump rope contest. Noah can jump 40 times in 0.5 minute. Han can jump \(y\) times in \(x\) minutes, where \(y = 78x\). If they both jump for 2 minutes, who jumps more times? How many more?