Cursed at the Heart wrote:BudgieLover5000 wrote:I HAVE A QUESTION!
TYPE OF QUESTION: Algebra 2
YOUR QUESTION:
How do you graph (x-2)(x+2)(x-1)?
I know how to get the x intercepts (I got -2, 1, and 2) but how do you get the y-intercepts (I think that's what it's called?)
to get the y-intercept, put 0 in for x, so y=(0-2)(0+2)(0+1)
Thanks!
I have a few questions though:
How come you substitute with a 0?
How come (x - 1) changes into (x + 1)?
And how do you get the other y-intercept? I thought there was supposed to be 2?
The way I was taught to do it was to substitute with the missing x, so if you put -2, 1, and 2 on a graph then -1 and .5 would be missing in between those points. So you would substitute like so:
Example of what I'm talking about: (-1 -2)(-1+2)(-1-1)
(.5 - 2)(.5 +2)(.5 - 1)
So that is why I'm really confused, sorry about that :C