Question

Explanation of:
Find the solution set, given the replacement set.
y = 1 – 3x {(1, 0), (0, 1), (1, -2), (-1, 4)}
And the answer is: {(0, 1), (1, -2), (-1, 4)}

I don't understand this at all. I don't remember anything about replacement sets in the lesson.

Answer 1

it means a new number sets that, when plugged into the equations will still continue to be valid

Answer 2

lets try all the options to show you what it means. now we try ((1,0) for\[y=1-3x\]\[0=1-3(1)\]that doesnt look valid right?

Answer 3

for 2nd option (0,1)\[1=1-3(0)\] this one is valid

Answer 4

for 3rd option (1,-2)\[-2=1-3(1)\] this is also valid

Answer 5

now the last option (-1,4)\[4=1-3(-1)\]this one is valid too

Answer 6

you can understand all that i hope

Answer 7

Yes thank you! So then the solutions listed are only the ones that were valid? I understand now!

Answer 8

yea

Answer 9

yw

Answer 10

This was a practice problem in the lesson before the test. Now I'm ready for the test :D. Thank you so much!

Answer 11

np, i didnt know about this replacement set thing until i reread the question and feel something was off lol

Answer 12

good luck with your test