锟斤拷锟斤拷一锟斤拷锟�锟斤拷锟斤拷锟斤拷y=kx+b(k≠0锟斤拷k,b锟角筹拷锟斤拷(sh锟斤拷))锟斤拷锟斤拷么y锟斤拷锟斤拷x锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟斤拷小锟斤拷锟斤拷锟斤拷锟剿高匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)知锟絉锟絚锟斤拷锟結(ji锟斤拷)锟斤拷請锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷一锟斤拷锟斤拷锟絰锟絚锟斤拷锟絰式锟斤拷

锟斤拷锟斤拷锟斤拷變锟斤拷x锟斤拷锟斤拷變锟斤拷y锟斤拷锟斤拷锟斤拷锟絇(gu锟斤拷n)系锟斤拷

锟斤拷锟斤拷y=kx+b

锟斤拷锟斤拷锟絫锟剿時锟絈y锟斤拷x锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟斤拷

锟斤拷锟斤拷锟截別锟斤拷锟斤拷锟斤拷b=0锟絩锟斤拷y锟斤拷x锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷y=kx(k锟介常锟斤拷(sh锟斤拷)锟斤拷k≠0)

锟斤拷锟斤拷锟斤拷锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟絴(zh锟斤拷)锟斤拷

锟斤拷锟斤拷1.y锟斤拷變锟斤拷值锟絚锟斤拷锟斤拷(y锟斤拷ng)锟斤拷x锟斤拷變锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷值锟斤拷k

锟斤拷锟斤拷锟斤拷锟斤拷y=kx+b(k锟斤拷锟斤拷锟解不锟斤拷锟斤拷膶锟斤拷锟�(sh锟斤拷)b取锟轿何岋拷锟斤拷(sh锟斤拷))

锟斤拷锟斤拷2.锟斤拷x=0锟絩锟斤拷b锟介函锟斤拷(sh锟斤拷)锟斤拷y锟絊锟较的截撅拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟侥圖锟斤拷锟斤拷锟絴(zh锟斤拷)锟斤拷

锟斤拷锟斤拷1.锟斤拷锟斤拷锟絚锟紻锟轿ｏ拷通锟絕锟斤拷锟斤拷3锟斤拷锟斤拷锟紼

锟斤拷锟斤拷(1)锟叫憋拷;

锟斤拷锟斤拷(2)锟斤拷锟絚;

锟斤拷锟斤拷(3)锟紹锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟侥圖锟斤拷——一锟絣直锟斤拷锟斤拷锟斤拷锟�锟斤拷锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟侥圖锟斤拷只锟斤拷知锟斤拷2锟絚锟斤拷锟斤拷锟紹锟斤拷直锟斤拷锟斤拷锟斤拷锟斤拷(通锟斤拷锟揭猴拷锟斤拷(sh锟斤拷)锟紻锟斤拷锟絚x锟絊锟斤拷y锟絊锟侥斤拷锟絚)

锟斤拷锟斤拷2.锟斤拷锟絴(zh锟斤拷)锟斤拷(1)锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟较碉拷锟斤拷锟斤拷一锟絚P(x锟斤拷y)锟斤拷锟斤拷锟組锟斤拷锟绞斤拷锟統=kx+b锟斤拷(2)一锟轿猴拷锟斤拷(sh锟斤拷)锟絚y锟絊锟斤拷锟絚锟斤拷锟斤拷锟剿匡拷锟斤拷(0锟斤拷b)锟斤拷锟絚x锟絊锟斤拷锟角斤拷锟斤拷(-b/k锟斤拷0)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟侥圖锟斤拷锟斤拷锟絕原锟絚锟斤拷

锟斤拷锟斤拷3.k锟斤拷b锟絚锟斤拷锟斤拷(sh锟斤拷)锟紻锟斤拷锟斤拷锟斤拷锟斤拷锟睫ｏ拷

锟斤拷锟斤拷锟斤拷k>0锟絩锟斤拷直锟斤拷锟斤拷通锟絕一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷y锟絊x锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�;

锟斤拷锟斤拷锟斤拷k<0锟絩锟斤拷直锟斤拷锟斤拷通锟絕锟斤拷锟斤拷锟斤拷锟斤拷锟睫ｏ拷y锟絊x锟斤拷锟斤拷锟斤拷锟斤拷p小锟斤拷

锟斤拷锟斤拷锟斤拷b>0锟絩锟斤拷直锟斤拷锟斤拷通锟絕一锟斤拷锟斤拷锟斤拷锟斤拷;

锟斤拷锟斤拷锟斤拷b=0锟絩锟斤拷直锟斤拷通锟絕原锟絚

锟斤拷锟斤拷锟斤拷b<0锟絩锟斤拷直锟斤拷锟斤拷通锟絕锟斤拷锟斤拷锟斤拷锟斤拷锟睫★拷

锟斤拷锟斤拷锟截別锟斤拷锟斤拷锟斤拷b=O锟絩锟斤拷直锟斤拷通锟絕原锟絚O(0锟斤拷0)锟斤拷示锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟侥圖锟斤拷

锟斤拷锟斤拷锟紷锟絩锟斤拷锟斤拷k>0锟絩锟斤拷直锟斤拷只通锟絕一锟斤拷锟斤拷锟斤拷锟斤拷;锟斤拷k<0锟絩锟斤拷直锟斤拷只通锟絕锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷