Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
dalong123
dalong123 asked in Science & MathematicsMathematics · 1 decade ago

Get a Quadratic Formula from points(on a calculator)?

I have a TI-84 Plus calculator and im trying to calculate the the formula for certain points that i have

(1,1);(2,3);(3,6);(4,10)

So far i went to STAT->Edit(plugged in my points)

then i went to STAT->CALC-> QuadReg

then plugged in QuadReg L1(into the main screen) and i got an error/ i also tried L1 QuadReg(same deal)

Am i doing this wrong??

I know the formula is (n^2+n)/2, but i want to know how to do it on the Calculator

1 Answer

Relevance
  • Morningfox
    Lv 7
    1 decade ago
    Favorite Answer

    I don't know the TI-84, but the formula for those points is:

    y = 0.5x^2 + 0.5x

Still have questions? Get your answers by asking now.