Question

What value of a will yield a solution of (2, 8) for the system?

y = ax
ax + y = 16
A. 1
B. 2
C. 3
D. 4

Answer 1

Answer: D. 4

Step-by-step explanation:

Plug (x,y) = (2,8) into the first equation and solve for 'a'

y = ax

8 = a*2

2a = 8

a = 8/2

a = 4

Or you could also pick the second equation

ax + y = 16

a*2 + 8 = 16

2a + 8 = 16

2a = 16-8

2a = 8

a = 8/2

a = 4

Answer 2

c

Step-by-step explanation: