Question

how to find domain and range of y=1/x

Answer 1

First look for what value of x, y is undefined

Answer 2

so would it be negative infinity?

Answer 3

Nope, what happens when x=0

Answer 4

?

Answer 5

what do think is 1/0

Answer 6

zero

Answer 7

[1\div 0 = undefined\]

Answer 8

Nope, 1/0 is undefined

Answer 9

So, x cannot be 0

Answer 10

got it?

Answer 11

no

Answer 12

if it is zero then both the range and domain would be negative infintity or infinity?

Answer 13

Do u understand why 1/0 is undefined

Answer 14

because zero does not go into anything?

Answer 15

So, x cannot be 0 as y is undefined when x=0

Answer 16

Now, can u write domain

Answer 17

i think i got it. can you help me with y=-2/x+1

Answer 18

there when x=-1 then y is undefined so x cannot be -1

Answer 19

-2 to infinity?

Answer 20

Here: For y=1/x