Find JK if J (7,4) and K (-3,2)

Answer 1

j=(7,4)

k=(-3,2)

use the distance formula

√{(7-[-3])^2+(4-2)^2}

√(10^2+2^2)

√104

10.198 is the measure of JK

Answer 2

Leo,

This question will require you to draw. :)

What you have to do is draw a right triangle, making this line the hypotenuse.

Start by drawing a line between the two points. Next, draw a line down from (7,4) to (7,2). Now draw a line from (7,2) to (-3,2). Stand back and admire the right triangle you just drew!

The length of the line from (7,4) to (7,2) is 2. The length of the line from (7,2) to (-3,2) is 10.

Now use Pythagorean theorem:

a² + b² = c²

2^{2 +} 10² = c^2.

104 = c²

c = 10.198

Hope this helps! :)