Question

Look at the table below what’s the value of k

Answer 1

k = 5

Explanation:

substitute the values of x into 3x + k and equate with the corresponding value, that is

x = 1

3(1) + k = 8

3 + k = 8 ( subtract 3 from both sides )

k = 5

x = 3

3(3) + k = 14

9 + k = 14 ( subtract 9 from both sides )

k = 5

x = 5

3(5) + k = 20

15 + k = 20 ( subtract 15 from both sides )

k = 5

the value of k is therefore 5