Question

MEDAL WILL BE REWARDED TO BEST ANSWER!

Explain why (4,1) is not a solution to the equation y=3x+1.

Answer 1

(4,1) is short for x=4 and y=1

if you replace x with 4 and y with 1 in your equation, is the equation true ?

Answer 2

Why would x = 4 and not 1? @phi

Answer 3

are you asking why (4,1) means x is 4 and y is 1 ?

Answer 4

yes @phi

Answer 5

why wouldnt it be x=1 amd y=4

Answer 6

the same reason you call a dog a dog and not a cat.... whoever invented this (Descarte maybe) said when I write (4,1) the first number is the x, and the second number is the y

Answer 7

ok thank ypu!:)

Answer 8

y=3x+1

now replace x with 4 and y with 1
can you do that ?

Answer 9

yes I understand it now thanks

Answer 10

now replace x with 4 and y with 1
can you do that ?

Answer 11

you should get
1= 3*4+1
simplify the right side to 12+1 or 13
1= 13
that is not true
so you know that (4,1) is not a solution