predict the value i though it was 16 1hat do you think

Algebra
Tutor: None Selected Time limit: 1 Day

X              y

-2             2

-1             4

0              6

1              8

2             10

3            12

May 12th, 2015

Its an equation of a line y=2x+6

therefore  for X=4 ,     Y=2*4+6 = 14

                      X=5,      Y=2*5 + 6 = 16

                      X=6,       Y=2*6 + 6 = 18         And so on..........

EXPLANATION:

let the equation of line be y=mx+c

2=-2m+c               (known)

4=-1m+c                (known)

solving gives m=2,  c=6

so the equation of line becomes y=2x+6





Feel free to ask any doubts............

Good Luck

May 12th, 2015

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May 12th, 2015
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