- #1
Ned Eterminita
- 8
- 3
Hello Forum,
I've gone about graphing the below equation by inserting values in for y and then solving for x:
y(x-1)=x2-1
For instance, I say y=3 and then solve:
3(x-1)=x2-1
3x-3=x2-1
3x=x2-1+3
3x=x2+2
0=x2-3x+2
0=(x-1)(x-2)
Thus x = 1 and 2 and so I plot co-ordinates (1,3) and (2,3).
Now I repeated this quite a few times with different values and it appears that there is a vertical line in the graph where x=1.
Can anyone explain why this vertical line feature appears in the graph?
I've gone about graphing the below equation by inserting values in for y and then solving for x:
y(x-1)=x2-1
For instance, I say y=3 and then solve:
3(x-1)=x2-1
3x-3=x2-1
3x=x2-1+3
3x=x2+2
0=x2-3x+2
0=(x-1)(x-2)
Thus x = 1 and 2 and so I plot co-ordinates (1,3) and (2,3).
Now I repeated this quite a few times with different values and it appears that there is a vertical line in the graph where x=1.
Can anyone explain why this vertical line feature appears in the graph?