Question

Give the function that describes the sequence.

X Y
1 18
2 23
3 28
4 33




A. 10x + 3
B. 3x + 1
C. 11x - 9
D. 5x + 13

Answer 1

use trial error
let D as the anwer
y = 5x + 13
if x = 1 then y = 5*1 + 13 = 18 (true)
if x = 2 then y = 5*2 + 13 = 23 (true)
if x = 3 then y = 5*3 + 13 = 28 (true)
if x = 4 then y = 5*4 + 13 = 33 (true)
because all be true
so, dont bother it is D