To figure out variable costs, divide the cost of making one unit of your product by the total number of units you've made. ... The variables x and y are variables, while the constants a, b, and c are ...

While there are more than two variables in this equation, it's still a linear equation because one of the variables will always be a constant (distance). Example 2 .

Step 1: Find the value of one variable, say y in terms of the other variable, i.e., x from either equation, whichever is convenient. Step 2: Substitute this value of y in the other equation, and ...

Regression Equation . Now that we know how the relative relationship between the two variables is calculated, we can develop a regression equation to forecast or predict the variable we desire.

These equations are a handy way to model how changing one variable will change another (if you already know how the variables are related). On the other hand, they’re also great for figuring out ...

Learn how to solve equations with examples when 𝒙 is on one side with this BBC Bitesize Maths article. Maths revision for KS3 students between the ages of 11 and 14.