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Mathematics 21 Online
OpenStudy (anonymous):

1) What is the distance between the points (4, 7) and (4, –5)? a. 0 units b. 2 units c. 4 units d. 12 units anyone know?

Nnesha (nnesha):

\[\huge\rm \sqrt{(x_2 - x_1)^2 + (y_2 -y_1)^2}\] formula to find distance

Nnesha (nnesha):

order pair where x and y values are \[(\huge\rm (x_1 ,y_1) (x_2 ,y_2)\] so substitute x and y values into the formula

OpenStudy (anonymous):

umm, so wouldnt it be B? @Nnesha

Nnesha (nnesha):

nope :( can you show your work so i can look over to figure out where u did a mistake :)

OpenStudy (anonymous):

oh ok, so what were basically doing is substituting x and y into the formula? @Nnesha

Nnesha (nnesha):

yes x_2 -x_1 and then take square

Nnesha (nnesha):

|dw:1426017882595:dw|

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