Question

PLEASE HELP ME :(. Look at this system of equations.

X - 8y = -3
5x - 2y = 4
What value of a will make this system have the same solution?
ax = -19
5x - 2y = 4

Answer 1

9514 1404 393

Answer:

a = -19

Explanation:

In the first set of equations, subtract 4 times the second equation from the first.

(x -8y) -4(5x -2y) = (-3) -4(4)

-19x = -19 . . . . simplify

Comparing this to the equation ...

ax = -19

we see that they will have the same solution when a = -19.