## What is an example of combined variation in real life situation?

Many situations involve more than one type of variation. Combined variation is a combination of direct, inverse, and joint variation. For example, the sales of a product may be directly proportional to the amount of money spent on advertising the product, but inversely proportional to the price of the product.

How do you solve joint variation problems?

Joint variation problems are solved using the equation y = kxz. In this case, you should use a, b, and c instead of x, y, and z and notice how the word “cubed” changes the equation. Step 2: Use the information given in the problem to find the value of k. In this case, you need to find k when a = 36, b = 4, and r = 6.

### What is joint variation examples?

When a variable is dependent on the product or quotient of two or more variables, this is called joint variation. For example, the cost of busing students for each school trip varies with the number of students attending and the distance from the school.

What is a combined and joint variation?

Joint variation is a variation where a quantity varies directly as the product of two or more other quantities. Combined variation is a variation where a quantity depends on two (or more) other quantities, and varies directly with some of them and [varies inversely](/inverse-variation.

#### How do you find the direct variation?

The general form of a direct variation formula is y = k x y=kx y=kx, where x and y are variables (numbers that change) and k is a constant (a number that stays the same).

What is the difference between joint and combined variation?

In Algebra, sometimes we have functions that vary in more than one element. When this happens, we say that the functions have joint variation or combined variation. Joint variation is direct variation to more than one variable (for example, d = (r)(t)). With combined variation, we have both direct variation and indirect variation.

## What are joint variation equations?

First set up the equation. a varies jointly with b and c.

• k. Given that a = 12 when b = 1 and c = 6
• Rewrite the equation using the value of the constant ‘k’
• find the missing value.
• then the value of a is 12.
• Which equation’s represent joint variations?

Joint variation problems are solved using the equation y = kxz. When dealing with word problems, you should consider using variables other than x, y, and z, you should use variables that are relevant to the problem being solved.

### What is the meaning of combined variation?

Combined Variation. Combined variation describes a situation where a variable depends on two (or more) other variables, and varies directly with some of them and varies inversely with others (when the rest of the variables are held constant).

What is an example of combined variation in real life situation? Many situations involve more than one type of variation. Combined variation is a combination of direct, inverse, and joint variation. For example, the sales of a product may be directly proportional to the amount of money spent on advertising the product, but inversely proportional…