Question

Which of the following is an equation of a proportional relationship?

Group of answer choices

y = 25x

y = 5x + 25

Describe what the equation you chose above could represent. In other words, what real-world situation could this equation be used?

Answer 1

Both are proportional, because as the value of x change (increases or decreases), the value of y changes (increases or decreases).

The first equation (y = 25x) could represent that amount of teachers per students. If x = teachers (let's say there is 1 teacher), then y = students (1 teacher would teach a class of 25 students).

The second equation (y = 5x + 25) could represent the amount of money you could earn babysitting. The starting/base amount would be $25, and you would earn $5 more for every hour you babysat.

Explanation: