Video: Yuav ua li cas koj sau ib qho kev sib npaug nyob rau hauv txoj kab nqes intercept daim ntawv rau ib lub rooj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Noj cov kev sib npaug y = mx + b thiab ntsaws rau hauv tus nqi (m = 1) thiab ib khub (x, y) kev tswj hwm los ntawm rooj , xws li (5, 3). Ces daws rau b. Thaum kawg, siv m thiab b qhov tseem ceeb uas koj pom (m = 1 thiab b = -2) rau sau tus kev sib npaug.
Ib yam li ntawd, koj sau y MX B hauv lub rooj li cas?
Yuav nrhiav tau y -intercept, hloov txoj kab nqes rau m hauv cov qauv y = mx ua + b , thiab hloov ib qho kev txiav txim ua khub hauv lub rooj rau x og y nyob rau hauv cov mis, ces daws rau b . Thaum kawg, hloov cov nqi rau m thiab b rau hauv cov mis y = mx ua + b rau sau qhov sib npaug ntawm kab.
Ib yam li ntawd, koj nrhiav txoj kab nqes li cas? Cov txoj kab nqes ntawm ib kab characterizes cov kev taw qhia ntawm ib kab. Yuav nrhiav tau txoj kab nqes , koj faib qhov sib txawv ntawm y-coordinates ntawm 2 cov ntsiab lus ntawm ib kab los ntawm qhov sib txawv ntawm x-coordinates ntawm tib 2 ntsiab lus.
Tom qab ntawd, ib tus tuaj yeem nug, koj ua qhov sib npaug ntawm daim duab li cas?
Sau ib kev sib npaug nyob rau hauv daim ntawv nqes hav-intercept, muab a daim duab ntawm qhov ntawd kev sib npaug , xaiv ob lub ntsiab lus ntawm kab thiab siv lawv los nrhiav txoj kab nqes. Qhov no yog tus nqi ntawm m nyob rau hauv lub kev sib npaug . Tom ntej no, nrhiav cov kev tswj hwm ntawm y-intercept--qhov no yuav tsum yog ntawm daim ntawv (0, b). Tus y-coordinate yog tus nqi ntawm b nyob rau hauv lub kev sib npaug.
Koj pom daim ntawv nqes hav Point li cas?
Point txoj kab nqes yog: y - y1 = m (x - x1) where "m" = txoj kab nqes thiab (x1, y1) yog a taw tes ntawm kab. Vam tias qhov no yuav pab tau.
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
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Yuav ua li cas koj sau txoj kab nqes nqes intercept daim ntawv nyob rau hauv tus qauv daim ntawv?
Standard form yog lwm txoj hauv kev los sau daim ntawv nqes hav-intercept (as opposed to y=mx+b). Nws sau li Ax+By=C. Koj tuaj yeem hloov daim ntawv nqes hav-intercept rau cov qauv zoo li no: Y=-3/2x + 3. Tom ntej no, koj cais qhov y-intercept (qhov no nws yog 2) zoo li no: Ntxiv 3/2x rau txhua sab ntawm kab zauv kom tau qhov no: 3/2x + y = 3
Nws puas yuav ua rau pom qhov sib npaug ntawm kab sib npaug mus rau ib kab thiab los ntawm ib qho taw tes ntawm kab?
Qhov sib npaug ntawm ib kab uas yog parallel lossis perpendicular rau ib kab? Cov lus teb tau: Cov nqes hav ntawm cov kab sib npaug sib npaug. Hloov txoj kab nqes paub thiab cov kev sib koom ua ke ntawm ib qho taw tes ntawm lwm txoj kab rau hauv daim ntawv point-slope kom pom qhov sib npaug ntawm kab sib npaug
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)