Question

A triangle has vertices on a coordinate grid at points J( -1,5) K(4,5) and L(4, -2) . Wht is the length, in units of KL?

Answer 1

Hello!

To find the length of KL, we will need to use the distance formula.

The distance formula is $\sqrt{(x_{2}-x_{1})^{2} +(y_{2}-y_{1})^{2}}$.

We are given K(4, 5) and L(4, -2), and we can find the distance between these two points through substitution.

$\sqrt{(4-4)^{2} +(-2-5)^{2}}$

$\sqrt{(0)^{2} +(-7)^{2}}$

$\sqrt{(7)^{2}} = \sqrt{49} = 7$

Therefore, the length of KL is 7 units, choice B.