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Veronika [31]
3 years ago
10

(45 POINTS) Which graph represents a function with direct variation?

Mathematics
1 answer:
Alina [70]3 years ago
7 0

not that grap

Step-by-step explanation:

the graph has to start at the orgin to be a direct graph

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Determine the missing information in the paragraph proof.
dmitriy555 [2]

The information given is sufficient  for this proof .

Slope of a line passing through   x1 ,y1) and ( x2,y2) is given  by the formula :

            M =   ( y2 - y1)/ ( x2-x1)

________________________________


Let us start finding the slope of line  PQ  

the  given points are  ( a,b) and ( c,d)  

using the slope formula we get :

slope of line PQ =    m=   ( d-b) /( c-a)


Let us now try finidng slope of the another line  P'Q'  

It is passing through ( -b ,a)  and (-d,c)

using the  formula we get slope of P'Q' = m' =   ( c-a) /( -d -  -b)

                                                                       m'=   ( c-a) /( -d+b)

                                                                        m'=   ( c-a) / -( b-d Let us find the product of  m and m'  :

   ( d-b  )    *     ( c-a)

-----------         ------------                  =     -1

(c-a)            - ( b-d)


Because we got product of m and m'  = -1   hence proved   product of perpendicular lines are  negative reciprocal of each other .

                 

8 0
3 years ago
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Serhud [2]

Answer:

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Step-by-step explanation:

Note that each coordinate ( x and y) have their sign changed form positive to negative.  This is a rotation about the origin of 180 degrees.

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What is the slope of the line passing<br> through the points (-6, 2) and (-6,<br> 11)?
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-3/4 is the slope.
Explanation: if we use the formula y2- y1/ x2-x1= m (m being the slope) we get -3/4.
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2 years ago
What are the factors of the quadratic equation? 6=x2 +5x
disa [49]
X2 + 5x - 6 =0
(x +6)(x-1)=0

4 0
3 years ago
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Answer:

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