Answer:
See Explanation
Step-by-step explanation:
Given two variables (say x and y); the constant of proportionality is the ratio between these to variables.
Illustration; y is directly proportional to x
The above statement can be represented as:
When converted to an equation, you get
k, in the above equation, represents the constant of proportionality
Divide both sides by x to solve for k
Take for instance:
Divide both sides by x
--- 3 is the constant of proportionality
As a fraction, it can’t be simplified. As a decimal, it’s 0.375.
Answer:
x^2 -4x -21
Step-by-step explanation:
Here, we want to write a quadratic polynomial
We have the sum as -4
Let us have x as the variable
so the sum of the variables is -4x
while the product is -21 x^2
Two factors of 21 that can work here is -7x and 3x
So we have
x^2 - 7x + 3x -21
= x^2 -4x -21