# GMAT Math : Calculating the length of a line with distance formula

## Example Questions

### Example Question #11 : Lines

A line segement on the coordinate plane has endpoints and . Which of the following expressions is equal to the length of the segment?      Explanation:

Apply the distance formula, setting :   ### Example Question #12 : Lines

What is distance between and ?     Explanation:     ### Example Question #851 : Gmat Quantitative Reasoning

What is the distance between the points and ?      Explanation:

Let's plug our coordinates into the distance formula. ### Example Question #14 : Lines

What is the distance between the points and ?      Explanation:

We need to use the distance formula to calculate the distance between these two points. ### Example Question #15 : Lines

Consider segment which passes through the points and .

Find the length of segment .      Explanation:

This question requires careful application of distance formula, which is really a modified form of Pythagorean theorem. Plug in everthing and solve: ### Example Question #16 : Lines

What is the length of a line segment that starts at the point and ends at the point ?      Explanation:

Using the distance formula for the length of a line between two points, we can plug in the given values and determine the length of the line segment by calculating the distance between the two points:     Tired of practice problems?

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