Question

What is the equation for this table?

X 2 4 5 8 12
Y 11 13 14 17 21

y, = 9, x


y, = , x, + 9

y = x - 9

Answer 1

y = x + 9

Explanation:

The table has (2, 11)

(x, y) = (2,11)

y = x + 9

11 = 2 + 9

11 = 11

(4, 13)

y = x + 9

13 = 4 + 9

13 = 13

(5, 14)

y = x + 9

14 = 5 + 9

14 = 14

But if we use y = 9x, it will be:

(2, 11)

11 = 9(2)

11 = 18 false.

Or if we use y = x - 9 it will also be false just like y = 9x.

(2, 11)

11 = 2 - 9

11 = -7 false.