Cov txheej txheem:

Koj pom qhov sib npaug ntawm ib qho point li cas?
Koj pom qhov sib npaug ntawm ib qho point li cas?

Video: Koj pom qhov sib npaug ntawm ib qho point li cas?

Video: Koj pom qhov sib npaug ntawm ib qho point li cas?
Video: Saib Tias Ntawm neeg lub cev (update) 23/4/2019 2024, Kaum ib hlis
Anonim

Nrhiav tus Kev sib npaug ntawm ib kab uas koj paub a Taw tes ntawm Kab Thiab Nws txoj kab nqes. Cov kev sib npaug ntawm ib kab feem ntau sau li y = mx + b qhov twg m yog txoj kab nqes thiab b yog y-intercept. Yog koj a taw tes tias ib kab hla dhau, thiab nws txoj kab nqes, nplooj ntawv no yuav qhia koj seb yuav nrhiav tau li cas kev sib npaug ntawm kab.

Nyob rau hauv no txoj kev, koj yuav nrhiav tau qhov sib npaug ntawm ib tug muab point?

Kev sib npaug ntawm 2 cov ntsiab lus siv Slope Intercept Form

  1. xam qhov nqes hav ntawm 2 ntsiab lus.
  2. Hloov qhov taw tes rau hauv qhov sib npaug. Koj tuaj yeem siv (3, 7) lossis (5, 11)
  3. daws rau b, uas yog y-intercept ntawm kab.
  4. Hloov b, -1, rau hauv kab zauv los ntawm kauj ruam 2.

Ib yam li ntawd, koj yuav daws qhov system ntawm kev sib npaug li cas? Ua raws li cov kauj ruam los daws qhov teeb meem.

  1. Kauj Ruam 1: Muab tag nrho thawj qhov sib npaug los ntawm 2.
  2. Kauj Ruam 2: Rov sau cov txheej txheem ntawm kev sib npaug, hloov thawj qhov sib npaug nrog cov kab zauv tshiab.
  3. Kauj Ruam 3: Ntxiv qhov sib npaug.
  4. Kauj ruam 4: daws rau x.
  5. Kauj Ruam 5: Nrhiav y-tus nqi los ntawm kev hloov hauv 3 rau x hauv qhov sib npaug.

Ib yam li ntawd, tej zaum koj yuav nug, koj yuav nrhiav tau qhov sib npaug ntawm kab li cas?

Yuav nrhiav tau kev sib npaug ntawm ib kab siv 2 ntsiab lus, pib los ntawm nrhiav txoj kab nqes ntawm kab los ntawm plugging 2 teev ntawm kev tswj hwm rau hauv qauv rau txoj kab nqes. Tom qab ntawd, ntsaws txoj kab nqes rau hauv txoj kab nqes-intercept qauv , los yog y = mx + b, qhov "m" yog txoj kab nqes thiab "x" thiab "y" yog ib txheej ntawm kev tswj hwm ntawm kab.

Yuav ua li cas koj pom qhov nqes hav cuam tshuam daim ntawv ntawm ib qho kev sib npaug?

Sau ib kev sib npaug hauv txoj kab nqes - cuam tshuam daim ntawv , muab ib daim duab ntawm qhov ntawd kev sib npaug , xaiv ob lub ntsiab lus ntawm kab thiab siv lawv rau nrhiav tus txoj kab nqes . Qhov no yog tus nqi ntawm m nyob rau hauv lub kev sib npaug . Tom ntej no, nrhiav lub coordinates ntawm y- cuam tshuam --Qhov no yuav tsum yog ntawm cov daim ntawv (0, ib.). Tus y-coordinate yog tus nqi ntawm b nyob rau hauv lub kev sib npaug.

Pom zoo: