Question

(1 point) Consider the system

2x + y = 3
-8x + ay = -11
Find a value of a so that the system is inconsistent. If there is no such value, write none.
a =

Answer 1

a=-4

Explanation:

1) Isolate x for 2x+y=3 which will give us x=3-y/2

2) Substitute 3-y/2 in the equation -8x+ay=-11

3) Then we simplify

4) Isolate for y

5)Then we simplify in order to get -4