# What is the distance between #(15,-4)# and #(7,5)#?

##### 2 Answers

See a solution process below:

#### Explanation:

The formula for calculating the distance between two points is:

Substituting the values from the points in the problem gives:

Or

It might not seem like it, but this question just invooves simple Pythagorus on a graph. Instead of getting the two lengths of the known sides, it has to be worked out by finding the length.

However, this is super easy, just fin the change in

To get from 15

To get from -4

Now we have a right-angled triangle of lengths 8, 9, and

To find the length of

We add our values in to get