Answer:
k = 1.5
Step-by-step explanation:
Pairs: (2, 3), (3, 4.5), (4, 6), (5, 7.5)
If there is a proportionality between two numbers or, as in this case, two variables, then:
y = kx
Where:
k = proportionality constant
The constant can therefore be found by rearranging:
k = y/x
Now, simply substitute any given pair of x- and y- values;
I will use (2, 3) as these are the smallest numbers so easier to use but any of the pairs can be used:
k = 3/2
k = 1.5
