Answer:
See Explanation
Step-by-step explanation:
Required
Proportion problems
An example is:
y is directly proportional to x such that: y=4 when x = 2;
Derive the equation
For direct proportions, we have:
This gives:
Make k the subject
So:
So, the equation is:
Assume the above question is for inverse proportion
The variation will be:
This gives:
Make k the subject
So, the equation is:
Answer:Yes
Step-by-step explanation:
It is a function if no values of x repeat
Answer: -3
Step-by-step explanation: f(-6) =2/3(-6) + 1= -12/3 + 1 = -4 + 1 = -3