50.8k views
0 votes
3x - 8y = 24
y = x - 8
plz show work

User SaloGala
by
3.4k points

1 Answer

11 votes

Answer:

the solution is (8, 0)

Explanation:

Solve this system of linear equations by substitution. We are told that y = x - 8. Substitute x - 8 for y in the first equation:

3x - 8(x - 8) = 24

Performing the indicated multiplication, we get

3x - 8x + 64 = 24. Combining like terms results in:

-5x = -40, so that x = 8.

y = x - 8 (given above), so in this case y = 8 - 8 = 0

Thus the solution is (8, 0)

User NathanG
by
3.3k points