Online Course Discussion Forum
2021 8 week prep course for AMC 10, hw questions
Hi, i have a question for 4,7, and 9.
Also, is the answer for #10 "6"?
I just finished #4. It's a pretty tough question. Took me a solid 20-25 minutes
Hint 1: Remember that vertices are -b/2a in standard forms of equations (ax^2 + bx + c)
Hint 2: They intersect at one point. What does that tell you about the solution of it? (Discriminant maybe?)
Anyone have any hints for #10?
Also, is the answer for question number 7 (3)?
Try using the given equation and subsitute y^2 for ?, then repeatedly use it, eventually substituting x for y
What I start with: (tell me if/where I made a mistake)
1/x-1/y=1/x+y --- how would I isolate one of the variables?
After that I should be able to solve the problem. Thanks, whoever helps me