Applying the distance formula

How is the distance formula correctly written:

• $d\ =\ \sqrt{\left(y_{1\ }-\ y_2\right)^2\ -\left(x_{2\ }-\ x_1\right)^2}\$

• $d\ =\ \sqrt{\left(x_{2\ }-\ x_1\right)^2\ +\ \left(y_{2_{\ }}-\ y_1\ \right)2}$

• $d\ =\ \sqrt{\left(y_{1\ }-\ y\ _2\right)^2\ +\ \left(x_{2\ }-\ x_1\right)}^2$

• d = $\sqrt{\left(x\right)^2-\ \left(y\right)^2}$

Tags

CCSS.HSG.GPE.B.7

A(3,1) B(-2,-1) written correctly is:

• $\sqrt{\left(-2-3\right)^2\ +\ \left(-1-1\right)^2}$

• $\sqrt{\left(1-3\right)^2\ +\ \left(-1-2\right)^2}$

• $\sqrt{\left(-2-3\right)^2\ -\ \left(-1-1\right)^2}$

• $\sqrt{\left(-2-3\right)^2\ -\ \left(-1-1\right)^2}$

Tags

CCSS.HSG.GPE.B.7

What is the distance between AB?

• 0

• undefined

• 5

• 4

Tags

CCSS.HSG.GPE.B.7

Find the distance.

• 9.7
• 10.7
• 11.7
• 12.7

Tags

CCSS.HSG.GPE.B.7

Find the distance between ( 1, 3) and (5, 6) 

• 3
• 4
• 5
• 6

Tags

CCSS.HSG.GPE.B.7

Find the length of the missing side. 

• 17 cm
• 22 cm
• 15 cm
• 13 cm

Tags

CCSS.HSG.SRT.C.6

CCSS.HSG.SRT.C.8

Simplify

• 9
• √9
• 3√9
• can't simplify

Tags

CCSS.HSA.SSE.B.3

CCSS.HSN.RN.A.2

What is the distance between (2,9) and (1,5)?

• 15
• 17
• 4.12
• 3.87

Tags

CCSS.HSG.GPE.B.7