Mathematics

Mathematics

Problem

Select the correct description of the sign of

y

in the graph of

y=\dfrac{1}{x}

. a)

y>0

for all real

x\,(\neq 0)

b)

y>0

for

x>0

and

y<0

for

x<0

c)

y>0

when

|x|>1

and

y<0

when

|x|<1

d)

y<0

for

x>0

and

y>0

for

x<0

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