Mathematics
7 Online
OpenStudy (anonymous):
What are the x– and y–intercepts of the graph of y = x^2 + x – 6?
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OpenStudy (anonymous):
For finding x intercept, Put y = 0
And for finding y intercept, Put x = 0..
OpenStudy (anonymous):
So:
for finding x intercept you will put y = 0 that is:
\[x^2 + x - 6 = 0\]
Try to factor this equation and you will get two values of x..
OpenStudy (anonymous):
Tell me what is your factors to this equation??
OpenStudy (anonymous):
*are
OpenStudy (anonymous):
to factor it i would fing two numbers that multiply to -6 and add to 0?
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OpenStudy (anonymous):
Add to 1..
OpenStudy (anonymous):
okay
OpenStudy (anonymous):
Solving or not??
OpenStudy (anonymous):
-2 and 3 are my factors
OpenStudy (anonymous):
Then you are pretty correct in this..
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OpenStudy (anonymous):
So is this right?
\[(x+3)(x-2) = 0\]
OpenStudy (anonymous):
okay so those are my x and y factors?
OpenStudy (anonymous):
No these are only for x we will find y somewhat later..
OpenStudy (anonymous):
okay...can u show me the steps for finding y?
OpenStudy (anonymous):
For finding y, put x = 0 in your original equation..
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OpenStudy (anonymous):
okay so y=0^2+0-6?
OpenStudy (anonymous):
Yes go ahead so what did you get for y ??
OpenStudy (anonymous):
-6?
OpenStudy (anonymous):
So true..
OpenStudy (anonymous):
thankyou so much!!! I was having alot of trouble with this!
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OpenStudy (anonymous):
Welcome dear..