Question

A tree 5ft grows and average of 8in each year . Write and graph an equation to model the trees height h after x years.

Answer 1

It is implied in the given that the tree grows linearly. The equation can be expressed as,
                                 h = mx + b
where m and b are the slope and y-intercept. Convert the 8 in first to feet for the units to be uniform. 8 inches equal 0.75 ft. From the given, the final equation would be,
                                h = (3/4)x + 5