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if one goes up as the other goes down (or vice versa) they are inversely proportional

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Q: How can you tell if one variable is inversely proportional to another variable?
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How can you tell the difference between a graph in which one variable is directly proportional to another and a graph in which two variables vary inversely?

1. You can tell the difference because the proportional one has the same slope while the inversely one has opposite reciprocal slope.


How do you tell if a math table is inversely proportional or directly proportional?

Generally, if y increases as x increases, this is a hint that the quantity is directly proportional, and if y decreases as x increases, the relation might be inversely proportional. However, this is not always the case. x and y are directly proportional if y = kx, where k is a constant. x and y are inversely proportional if y = k/x, k is constant. This is the best way to tell whether the quantities are directly or inversely proportional.


How can you tell if one variable is directly proportional to another variable?

One variable is directly proportional to another if increasing/decreasing the first variable increases/decreases the second variable by the same proportion. For example, consider the equation a = b x c. "a" is directly proportional to both "b" and "c". If you double "b" or "c" then "a" is also doubled etc...


How can you tell something is a linear function?

A function is linear if one variable is directly proportional to the other.


What is an example of inversely proportional?

If quantity A is directly proportional to another quantity B, it means that if B is doubled so is A. When B is tripled so is A. It also works in the other direction; if A is tripled so is B. It works for any factor. In mathematical terms one may write: A = C * B Where C is some numerical constant.


Tell the table of IQ test?

how to tell if a table s proportional or non proportional


How do you tell if a pair of ratios are proportional?

you have to times and get the answer correct or not


Describe how you can tell by looking at the graph of a function with variable is the input variable and which is the output variable?

You cannot.


How can you tell from the graph of Molly's garden on the previous slide that it represents a proportional relationship?

The graph of a proportional relationship has the same unit rate, is a straight line, and starts at the origin.


How can i tell if a relation is a function?

you can tell if there is an independent (x) and a dependent (y) variable


What are the independent and depent variables?

You can tell which is the independent variable and which is the dependent variable by changing the equation into an "if/then" statement. Example: y = 3x In this example, x is the independent variable and y is the dependent variable. If you give me x, I will tell you y. If x = 1, then y = 3 If x = 2, then y = 6 So you give me the independent variable, and then I will be able to determine the dependent variable.


How can i tell when figures are similar?

When they have the same interior angles and their sides are proportional to each other.