Question

If ax + y=23, 3x - y = 9, and x =8, what is the value of a ?

Answer 1

a = 1

Explanation:

x = 8

3x - y = 9

3(8) - y = 9

24 - y = 9

-y = 9 - 24

-y = -15

y = 15

ax + y = 23

a(8) + 15 = 23

8a = 23 - 15

8a = 8

a = 8/8

a = 1