GED Math : Distance Formula

Study concepts, example questions & explanations for GED Math

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Example Questions

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Example Question #841 : Geometry And Graphs

What is the distance between the points  and ?

Possible Answers:

Correct answer:

Explanation:

Recall the distance formula:

Plug in the given points to find the distance between them.

The distance between those points is .

Example Question #842 : Geometry And Graphs

Find the length of the line connecting the following points.

 

Possible Answers:

Correct answer:

Explanation:

Find the length of the line connecting the following points.

 

To find the length of a line, use distance formula.

What we are really doing is making a right triangle and using Pythagorean Theorem to find the hypotenuse. 

Let's plug in our points and find the distance!

So our answer is 110

Example Question #841 : Geometry And Graphs

What is the distance between the points  and ?

Possible Answers:

Correct answer:

Explanation:

Remember that you can consider your two points as:

 and 

From this, remember that the distance formula is:

Now, for your data, this is:

or

You can simplify this value a little. Identify the prime factors of  and move any number that appears in a pair of factors from the interior to the exterior of the square root symbol:

 

Example Question #131 : Coordinate Geometry

What is the distance between the two points  and ?

Possible Answers:

Correct answer:

Explanation:

Remember that you can consider your two points as:

 and 

From this, remember that the distance formula is:

Now, for your data, this will look like the following.  Be very careful with the negative signs:

or

 is only factorable into  and ; therefore, your answer is in its final form already.

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