Question

Is this a function????
(3,7), (3,8), (3,-2), (3,4), (3,1)

Answer 1

yes

Answer 2

I disagree

Answer 3

ya its not i just got the anser

Answer 4

thx for helping tho :)

Answer 5

no probs

Answer 6

can u help me with one more question?

Answer 7

yep

Answer 8

What is the common difference of the following arithmetic sequence?

13, -7, -27, -47, …

Answer 9

well. just subtract the second term with the first term

Answer 10

do what?

Answer 11

If you have a arithmetic sequence a1,a2,a3,a4 and so on

the difference = a2-a1

Answer 12

ohhh ok
so -13-7=-20

Answer 13

ok thanks :)

Answer 14

no, it's actually -7-13 = -20

2nd term minus 1st term

Answer 15

oh yea :P

Answer 16

ok and how do i tell if a sequence is arithmetic?

Answer 17

all the terms have a common difference, d

Answer 18

is this sequence arithmetic?
1, -7, -14, -21, …

Answer 19

@alekos

Answer 20

i think it itsn't

Answer 21

find a2-a1 and a3-a2