The number of hours spent practising and the ability to successfully execute a specific skill (e.g. arm stand, high board dive) are related by a straight-line model: the more you practise, the better the performance of the dive. Which of the following equations best represents a 'straight line' model?
A) y = mx + c
B) y = mc + x
C) y = cm - x.
D) y = cx + m

Question

Quizplus · Accepted Answer

The equation y = mx + c represents a straight-line model, where m is the slope of the line and c is the y-intercept. In this case, y represents the ability to execute a skill and x represents the number of hours spent practicing. As the number of practice hours (x) increases, the ability to execute the skill (y) improves at a constant rate (represented by the slope, m).

The Number of Hours Spent Practising and the Ability to Successfully