Question

The graph below represents the number of vertical jumps an athlete can do over time. What is the constant of proportionality?1. 52. 153. 104. 25

Answer 1

Looking at the graph

we have a linear equation of the form

y=Kx ------> direct variation

where

K is the constant of proportionality

K=y/x

we need only one point to calculate the value of k

take the point (7,70)

K=70/7

K=10