Video: Yuav ua li cas koj nrhiav tau txoj kab nqes ntawm ib tug parallel thiab perpendicular kab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yuav nrhiav tau txoj kab nqes ntawm no kab peb yuav tsum tau kab rau hauv txoj kab nqes -intercept form (y = mx + b), uas txhais tau tias peb yuav tsum tau daws rau y: The txoj kab nqes ntawm kab 4x – 5y = 12 m = 4/5. Yog li ntawd, lub txoj kab nqes ntawm txhua kab parallel rau qhov no kab yuav tsum m = 4/5. Ob kab yog perpendicular yog.
Ib yam li ntawd, tib neeg nug, ua li cas koj thiaj nrhiav tau qhov chaw sib luag thiab kab nqes?
Hauv lwm lo lus, lub qhov chaw siab tshaj ntawm thaum uas tig mus kab sib npaug. Nco ntsoov tias ob kab yog thaum uas tig mus yog lawv qhov chaw siab tshaj sib npaug thiab lawv muaj qhov sib txawv y-intercepts. Hauv lwm lo lus, perpendicular nqes hav yog cov tsis zoo reciprocals ntawm ib leeg.
Ib tug kuj yuav nug, dab tsi yog parallel thiab perpendicular txoj kab nqes? Txij li thaum txoj kab nqes yog ib qho kev ntsuas ntawm lub kaum sab xis ntawm kab los ntawm kab rov tav, thiab txij li thaum uas tig mus kab yuav tsum muaj tib lub kaum sab xis, ces thaum uas tig mus kab muaj tib yam txoj kab nqes - thiab kab nrog tib yam txoj kab nqes yog thaum uas tig mus . Perpendicular kab yog me ntsis nyuab dua. Yog li perpendicular kab muaj qhov chaw siab tshaj uas muaj cov cim qhia.
Ua raws li qhov no, koj yuav ua li cas pom txoj kab nqes ntawm ib txoj kab perpendicular rau ib kab?
Ua ntej, muab tso rau kev sib npaug ntawm kab muab rau hauv txoj kab nqes - cuam tshuam daim ntawv los ntawm kev daws rau y. Koj tau txais y = 2 x + 5, yog li ntawd txoj kab nqes yog -2. Perpendicular kab muaj opposite-reciprocal qhov chaw siab tshaj , yog li ntawd txoj kab nqes ntawm kab peb xav tau nrhiav yog 1/2. Plug hauv qhov taw tes muab rau hauv kev sib npaug y = 1/2 x + b thiab daws b, peb tau b = 6.
Puas yog cov kab sib luag lossis perpendicular?
Parallel thiab kab perpendicular . Yog tias ob qho tsis ntsug kab uas nyob rau tib lub dav hlau muaj tib txoj kab nqes, ces lawv hais tias thaum uas tig mus . Ob kab sib npaug yuav tsis sib tshuam. Yog ob leeg tsis-ntsej kab nyob rau tib lub dav hlau sib tshuam ntawm lub kaum sab xis ces lawv hais tias perpendicular.
Pom zoo:
Yuav ua li cas koj nrhiav tau qhov sib npaug ntawm ib kab perpendicular mus rau ib tug taw tes?
Ua ntej, muab qhov sib npaug ntawm kab muab rau hauv daim ntawv nqes hav-intercept los ntawm kev daws rau y. Koj tau txais y = 2 x + 5, txoj kab nqes yog -2. Perpendicular kab muaj qhov tsis sib thooj-reciprocal slopes, yog li txoj kab nqes ntawm txoj kab peb xav pom yog 1/2. Txuas lub ntsiab lus muab rau hauv qhov sib npaug y = 1/2x + b thiab daws rau b, peb tau txais b = 6
Yuav ua li cas koj nrhiav tau qhov sib npaug ntawm ib kab uas muab ib tug point thiab ib tug parallel kab?
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