Question

A bamboo plant is growing 1 foot per day. When first measured, it is 4 ft tall.

a. Write an equation to describe the height, y, in feet, of the bamboo plant x days after you measure it. __________________

b. What is the y-intercept? What does the y-intercept represent? ________________________________________

Answer 1

a. If we let x be the number of days that the bamboo has lived and y be the height then, the equation that would represent the scenario is,

y = x + 4

b. The y-intercept of the equation is 4. This means that the initial height of the bamboo is equal to 4 ft.