The data in the adjacent table depicts the length of a person's forehand and their corresponding height. Based on this data, a student finds a relationship between the height (y) and the forehand length (x) as y = ax + b, where a, b are constant.
|Length ‘x’ of
forehand (in cm)
Find the height of a person whose forehand length is 40 cm
The relation is y = 0.9x + 24.5
When the forehand length is 40 cm, then height is 60.5 inches.
y = 0.9x + 24.5
= 0.9 × 40 + 24.5
= 36 + 24.5
= 60.5 feet