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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?

Two variables are directly proportional to each other if they increase or decrease together at a constant rate. In other words, if you plot the relationship between the two variables on a graph and the points lie on a straight line passing through the origin, then they are directly proportional. Mathematically, this can be expressed as y = kx, where k is a constant.


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?

An example of an inversely proportional relationship is the relationship between the time it takes to travel a certain distance and the speed at which you are traveling. As speed increases, the time it takes to travel the distance decreases.


Tell the table of IQ test?

how to tell if a table s proportional or non proportional


If two graphs have exactly the same shape what can you tell about the variables?

If two graphs have exactly the same shape, it indicates that the variables are proportional to each other. This means that as one variable increases or decreases, the other variable changes in a consistent and fixed ratio.


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 do you tell if a pair of ratios are proportional?

you have to times and get the answer correct or not


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.