ce "> Distance Formula-8th Grade Math
moomoomath logo header
lime green horizontal line
Welcome to MooMooMath
study skills A teachers secret guide to your best grades
Master the 7 pillars of school success

Improve your grades and lower your stress
A-Z Video List
Common Core Standard: 8.G.B.8   8th Grade Math
For horizontal or vertical lines, the length can be obtained by counting.

To find the distance from A  to  B  count from -4 to 1 which equals 5 units

To find the distance from P to Q count from 3 to -3 which equals 6 units
​Questions answered with this video..

How can you use the Pythagorean Theorem to find distance?

How do you find the distance of a vertical line on graph?

How do you find the distance of a horizntal line on a graph?

If a right triangle has leg lengths of 6 and 8 units,how do you find the length of the hypotenuse?
​Questions answered in this video..

What is the distance between the ordered pairs (-4,5) and (4,2)?

What is the distance formula?

Which number do you use for x and which number do you use for y ?
distance formula video
white box distance between two points

Additional Distance Formula videos from MooMooMath

If you have trouble remembering the distance formula then you can find the distance using the Pythagorean Theorem.

horizontal vertical lines graph
graph line
A^2 + B^2 = C^2
Count to the left 4 spaces for A and up 3 spaces for B
square root 1-(-3)^2 + (3-0)^2
 distance from A to B
distance from A to B
graph diagonal line
What is the distance from A to B? 
Using the ordered pairs: 
(-3,0) and (1,3)
distance formula

Distance Formula =

​​Unfortunately, this counting approach does NOT work for  
a diagonal segment.

To find the distance between two points on a Cartesian coordinate plane, use the coordinates of these ordered pairs, and the Distance formula below.​
what about diagonal line segments
distance vertical horizontal lines
In Coordinate Geometry, there are many methods to find distances of line segments.
Let's examine some of the methods:

Distance between two points Math Video

horizontal line

Distance Formula-8th Grade Math