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The slope of any line perpendicular to AB , where A(0, -3) and B(4, 9) are two points on the line, is m =

Question

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The slope of any line perpendicular to AB , where A(0, -3) and B(4, 9) are two points on the line, is m =

anonymous · Answer

a.-3
b.-1/3
c.3

ganeshie8 · Answer

start wid finding the slope of AB

ganeshie8 · Answer

do u knw how to find slope of two points ?

anonymous · Answer

no

ganeshie8 · Answer

u must be having slope formula in ur notes.. can u pls check if u have it ready and tell me the formula :)

anonymous · Answer

what i wrote in the first post is all i got.

ganeshie8 · Answer

ok, use this formula :-

slope of two points = $\frac{y2-y1}{x2-x1}$

ganeshie8 · Answer

using that first find the slope of AB.
then u can use that value to find the slope thats perpendicular to AB.

ganeshie8 · Answer

give it a try :)

anonymous · Answer

i really still dont get it :/

ganeshie8 · Answer

you wil get if u pay attention a bit

ganeshie8 · Answer

A(0, -3) and B(4, 9)
   x1  y1         x2 y2

ganeshie8 · Answer

just we need to plug them in the slope formula

anonymous · Answer

would it be 1/3?

ganeshie8 · Answer

Answer : -1/3
you dont care how to solve...