Question

Is the following system consistent or inconsistent?

8x + y + 4 = 0
y = -8x - 4

Answer 1

plug the y into the first equation.

Answer 2

i got always true. so its consistent ?

Answer 3

can you rewrite the 1st equation with y as the subject...

Answer 4

8x-8x-4+4=0
i plugged "y" into the first equation and got this ^

Answer 5

is that right? consistent?

Answer 6

yeah

Answer 7

if it was inconsistent, the left side of the equation won't equal to 0

Answer 8

can you help me with the other four?

Answer 9

I'm under the weather

Answer 10

oh its okay. im sorry.

Answer 11

stuffy nose and what not >:/ hate being sick

Answer 12

are you required to write proofs like my class? just wondering

Answer 13

.-. soup?
and nope. i go to online schooling :P

Answer 14

proof like show that...blah blah blah.

Answer 15

nope. its mostly mutli-choice.

Answer 16

@anthony~

The attached study chart may help.