Kana mutsetse wakarurama uchipfuura nepfungwa (4,2) uye (8,6) ipapo unoyambuka kupi x-axis? Tsanangura mhinduro yako.
Chokutanga, unofanira kuverenga gradient yomutsetse nokuwana kuchinja mu y pamusoro pokushanduka mu x. Muchiitiko ichi, pakati pechinhu chokutanga nechechipiri, y-coordinate inowedzera ne6-2=4 uye x-coordinate inowedzera ne8-4=4, saka gradient yacho i4/4=1. Tiri kutarisa mutsetse wakarurama une equation y=x+c yeimwe kukosha kwe c, iyo yatinogona kuwana nokuisa imwe yemapoinzi edu, somuenzaniso, 4=2+c, saka c inofanira kuva 2, uye equation yomutsetse i y=x+2. Apo mutsetse unoyambuka x-axis ipapo y-coordinate yawo iri 0. Nokudaro munyaya iyi mutsetse unoyambuka x axis pa x=-2.