Cov txheej txheem:
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj ntau yam daim ntawv uas peb ua tau sau tus kev sib npaug ib riy: taw tes - txoj kev nqes hav , cov txoj kab nqes - cuam tshuam daim ntawv , tus qauv daim ntawv , etc. Cov kev sib npaug ntawm ib kab muab ob lub ntsiab lus (x1, y1) thiab (x2, y2) uas cov kab dhau mus muab by, ((y - y1)/(x - x1)) / ((y2 - y1)/(x2 - x1)).
Tsis tas li ntawd, ua li cas koj sau qhov sib npaug ntawm ib kab uas muab ob lub ntsiab lus?
Nrhiav tus Kev sib npaug ntawm kab muab Uas Koj Paub Ob Ntsiab Lus Nws Hla Dhau. Cov kev sib npaug ntawm ib kab feem ntau yog sau li y = mx + b qhov twg m yog txoj kab nqes thiab b yog y-intercept.
Ib sab saum toj no, dab tsi yog qhov txhais ntawm point slope form? Txhais ntsiab lus - txoj kev nqes hav .: qhov sib npaug ntawm txoj kab ncaj nraim hauv qhov daim ntawv y - y1 = m(x-x1) qhov twg m txoj kab nqes ntawm kab thiab (x1, tus y1) yog lub coordinates ntawm ib tug muab taw tes ntawm kab - piv txoj kab nqes - cuam tshuam daim ntawv.
Xav txog qhov no, koj ua li cas thiaj nrhiav tau txoj kab nqes muab ob lub ntsiab lus?
Muaj peb kauj ruam hauv kev xam qhov nqes hav ntawm txoj kab ncaj nraim thaum koj tsis muab nws qhov sib npaug
- Kauj Ruam Ib: Txheeb xyuas ob lub ntsiab lus ntawm kab.
- Kauj ruam 2: Xaiv ib qho los ua (x1, y1) thiab lwm qhov los ua (x2, y2).
- Kauj Ruam 3: Siv txoj kab nqes nqes los xam txoj kab nqes.
Y intercept form yog dab tsi?
Nyob rau hauv qhov sib npaug ntawm ib txoj kab ncaj (thaum qhov sib npaug sau ua " y = mx + b"), txoj kab nqes yog tus lej "m" uas tau muab faib rau ntawm x, thiab "b" yog qhov y - cuam tshuam (uas yog, qhov taw tes uas txoj kab hla txoj kab ntsug y -axis). Qhov no pab tau daim ntawv ntawm kab sib npaug yog sensibly hu ua "slope- cuam tshuam daim ntawv ".
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Puas yog nws ua tau rau ib qho kev sib npaug ntawm ob txoj kab sib npaug kom tsis muaj kev daws teeb meem piav qhia koj qhov laj thawj?
Cov kab ke ntawm kab sib npaug tuaj yeem tsuas muaj 0, 1, lossis ib qho kev daws teeb meem tsis kawg. Ob kab no tsis tuaj yeem hla ob zaug. Cov lus teb raug yog tias qhov system muaj ib qho kev daws teeb meem. Total Number of Points Number of 2-Point Baskets Number of 3-Point Baskets 17 4 (8 ntsiab lus) 3 (9 points) 17 1 (2 points) 5 (15 points)
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Siv qhov sib npaug y = mx + b thiab ntsaws rau hauv tus nqi m (m = 1) thiab ib khub ntawm (x, y) kev tswj hwm ntawm lub rooj, xws li (5, 3). Ces daws rau b. Thaum kawg, siv qhov m thiab b qhov tseem ceeb koj pom (m = 1 thiab b = -2) los sau cov kab zauv