Ib kab sib npaug mus rau x-axis yog a kab rov tav uas nws qhov sib npaug yog ntawm daim ntawv y=k, qhov 'k' yog qhov deb ntawm kab ntawm x -axis. Ib yam li ntawd, ib kab sib npaug mus rau y-axis yog kab ntsug uas nws qhov sib npaug yog ntawm daim ntawv x=k, qhov 'k' yog qhov kev ncua deb ntawm kab ntawm y-axis.
Puas kab kab rov tav piv rau x-axis?
A kab kab rov tav yog kab sib npaug rau x-axis, qhov twg y-coordinates yog tib yam thoob plaws. y-intercept ntawm kab kab rov tav yog (0, b).
kab twg yog parallel rau x=- 2?
Answer: y=3x +1 is parallel to y=x-2.
Dab tsi yog txoj kab nqes ntawm kab sib npaug rau x-axis?
Txoj kab nqes ntawm txoj kab ncaj nraim mus rau qhov x-axis yuav ib txwm yog '0' vim yuav tsis muaj txoj kab nqes mus rau txoj kab ncaj nraim uas yog parallel mus rau axis.
x-axis yog dab tsi?
Teb: Qhov sib npaug ntawm x-axis yog y=0 . Cov kab rov tav hauv lub dav hlau sib koom ua ke yog sawv cev los ntawm x-axis. Kev piav qhia: Cov ntsiab lus ntawm x-axis yog ntawm daim ntawv (a, 0), qhov twg a yog tus lej tiag. Yog li, y-coordinate ntawm qhov taw tes ntawm x-axis yog 0.
