Video: Txoj kab nqes ntawm y =- 2x yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov nqes hav rau txhua qhov sib npaug "" yog m, thiab y - cuam tshuam (piv txwv li qhov chaw x = 0) yog c. Yog li cov nqes hav rau y = 2x ua yog nqes hav = 2.
Ua kom pom qhov no, Y cuam tshuam rau y =- 2x?
Cov nqes hav - cuam tshuam form yog y = kuv x kev +b y = kuv x kev + b, qhov twg yog m nqes hav a b yog y - cuam tshuam . Siv cov nqes hav - cuam tshuam form, ua y - cuam tshuam yog 0.
Tom qab ntawd, lo lus nug yog, koj teeb duab y =- 2x li cas? Nrhiav qhov tseem ceeb ntawm m m thiab b b siv daim ntawv y = mx+ib y = mx + b Txoj kab nqes ntawm kab yog tus nqi ntawm m m, thiab tus y -kev nkag siab yog tus nqi ntawm b b. Ib txoj kab twg tuaj yeem nkag siab siv ob lub ntsiab lus. Xaiv ob qhov tseem ceeb x, thiab ntsaws lawv rau hauv kab zauv kom pom qhov sib thooj y tus nqi.
Ib sab saum toj, qhov nqes hav ntawm y 2x 4 yog dab tsi?
Teb thiab Piav Qhia: Hauv kev daws teeb meem y = 2x ua - 4 , peb pom tias cov nqes hav ntawm kab yog 2, tus y -Kev nkag siab ntawm kab yog y = - 4 , thiab x-cuam tshuam ntawm kab yog x = 2.
Koj yuav daws y2 li cas?
- Txhawm rau nrhiav y-tus nqi, peb tuaj yeem ntsaws x = 2 rau hauv qhov sib npaug thib ob thiab daws rau y.
- Plug x = 2 rau 2x+y = 6.
- Muab ob npaug ua ke, thiab koj yuav tau 4+y = 6.
- Rho tawm 4 los ntawm ob sab thiab koj tau y = 2.
Pom zoo:
Txoj kab nqes ntawm kab uas tsis muaj Y cuam tshuam yog dab tsi?
Qhov no txhais tau tias nws yog kab ntsug, xws li. Txoj kab nqes ntawm kab no tsis tau txiav txim siab. Yog hais tias kab tsis muaj x-cuam tshuam, tom qab ntawd nws yeej tsis cuam tshuam cov x-axis, yog li nws (tag nrho ntu muaj 159 lo lus.)
Dab tsi yog units ntawm txoj kab nqes?
Txoj kab nqes ntawm ib lub roob yog nce tshaj khiav. Ob leeg muaj qhov ntev ntawm qhov ntev, yog li lawv qhov piv txwv tsis muaj qhov dav. Cov units ntawm txoj kab nqes yog cov units ntawm nce muab faib los ntawm units of run, qhov nce yog dab tsi peb npaj rau ntawm ntsug axis ntawm ib tug graphand khiav yog dab tsi peb npaj rau kab rov tav axis. Txoj kab nqes = Δ y/Δ x lossis nqes hav = (y2-y1)/(x2-x1)
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