#finding coordinates
24 messages · Page 1 of 1 (latest)
Plot it and find out is what I would say you should notice that its kind of stretched version of y=1/x^2
To find the coordinates when theyre both integers think carefully about what x ^2 must be
Ie a factor
1?
9?
Wait no
X^2 must be = 1 or 9 yh
So what does that make x
1 and 3
Only them?
Well u said a=9
So in order for both y and x to be integers x^2 must be a factor of 9
Since x must be also integer we figure out x^2 must be 1 or 9
And they have 2 solutions each a positive and negative
Use the x to find a corresponding y and thats it
Ohhhok