锟斤拷锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟角革拷锟叫猴拷锟斤拷(sh锟斤拷)知锟絉锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟秸的冿拷(n锟斤拷i)锟捷ｏ拷锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)一锟轿猴拷锟斤拷(sh锟斤拷)知锟絉锟絚锟斤拷锟絯锟斤拷锟斤拷锟斤拷锟斤拷锟絚锟斤拷請锟斤拷锟斤拷一锟斤拷要锟斤拷锟絩锟介看锟剿斤拷锟斤拷

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截ｏ拷锟斤拷(d锟斤拷ng)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)

锟斤拷锟斤拷锟絚锟斤拷W(xu锟斤拷)锟斤拷(x锟斤拷)锟斤拷2017锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)一輪锟斤拷(f锟斤拷)锟斤拷(x锟斤拷)锟斤拷锟絚知锟絉锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰

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(d锟斤拷ng)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

锟斤拷锟斤拷锟絚锟斤拷W(xu锟斤拷)锟斤拷(x锟斤拷)锟斤拷锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)一輪锟斤拷(f锟斤拷)锟斤拷(x锟斤拷)知锟絉锟絚锟斤拷锟結(ji锟斤拷)锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟斤拷锟絰锟絚锟斤拷锟絴(zh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斤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缴★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(d锟斤拷ng)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(d锟斤拷ng)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斤拷锟斤拷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(d锟斤拷ng)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(d锟斤拷ng)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(d锟斤拷ng)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(d锟斤拷ng)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

锟斤拷锟斤拷锟紷锟絩锟斤拷锟斤拷(d锟斤拷ng)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(d锟斤拷ng)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

锟斤拷锟斤拷锟侥★拷锟絖锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟侥憋拷锟絖式锟斤拷

锟斤拷锟斤拷锟斤拷知锟絚A(x1锟斤拷y1);B(x2锟斤拷y2)锟斤拷請锟絖锟斤拷锟絕锟絚A锟斤拷B锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟侥憋拷锟絖式锟斤拷

锟斤拷锟斤拷(1)锟絆(sh锟斤拷)一锟轿猴拷锟斤拷(sh锟斤拷)锟侥憋拷锟絖式(也锟叫斤拷锟斤拷式)锟斤拷y=kx+b锟斤拷

锟斤拷锟斤拷(2)锟斤拷锟斤拷锟揭伙拷魏锟斤拷锟�(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統(t锟斤拷ng)=kx+b锟斤拷锟斤拷锟皆匡拷锟斤拷锟叫筹拷2锟斤拷锟斤拷锟教ｏ拷y1=kx1+b …… 锟斤拷 锟斤拷 y2=kx2+b …… 锟斤拷

锟斤拷锟斤拷(3)锟斤拷锟紷锟斤拷锟斤拷元一锟轿凤拷锟斤拷锟斤拷锟矫碉拷k锟斤拷b锟斤拷值锟斤拷

锟斤拷锟斤拷(4)锟斤拷锟矫碉拷一锟轿猴拷锟斤拷(sh锟斤拷)锟侥憋拷锟絖式锟斤拷

锟斤拷锟斤拷[要锟絎(xu锟斤拷)锟斤拷(x锟斤拷)锟絎(w锟斤拷ng),只锟斤拷锟叫學(xu锟斤拷)锟斤拷锟斤拷喜锟絞锟斤拷锟筋實锟矫的學(xu锟斤拷)锟斤拷(x锟斤拷)論锟斤拷锟斤拷锟斤拷址   www.yaoxuexi.cn    锟街機锟斤拷锟街� wap.yaoxuexi.cn]

锟斤拷锟斤拷锟斤拷锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟叫的戯拷(y锟斤拷ng)锟矫ｏ拷

锟斤拷锟斤拷1.锟斤拷(d锟斤拷ng)锟絩锟絞t一锟斤拷锟斤拷锟斤拷锟絰s锟斤拷锟劫讹拷v锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟斤拷s=vt锟斤拷

锟斤拷锟斤拷2.锟斤拷(d锟斤拷ng)水锟截筹拷水锟劫讹拷f一锟斤拷锟斤拷水锟斤拷锟斤拷水锟斤拷g锟角筹拷水锟絩锟絞t锟斤拷一锟轿猴拷锟斤拷(sh锟斤拷)锟斤拷锟絆(sh锟斤拷)水锟斤拷锟斤拷原锟斤拷水锟斤拷S锟斤拷g=S-ft锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫癸拷式锟斤拷

锟斤拷锟斤拷1.锟襟函旓拷(sh锟斤拷)锟紻锟斤拷锟絢值锟斤拷(y1-y2)/(x1-x2)

锟斤拷锟斤拷2.锟斤拷锟絚x锟絊平锟叫撅拷锟轿碉拷锟斤拷锟絚锟斤拷|x1-x2|/2

锟斤拷锟斤拷3.锟斤拷锟絚y锟絊平锟叫撅拷锟轿碉拷锟斤拷锟絚锟斤拷|y1-y2|/2

锟斤拷锟斤拷4.锟斤拷锟斤拷锟解線锟轿碉拷锟絃锟斤拷√(x1-x2)^2+(y1-y2)^2  (注锟斤拷锟斤拷號锟斤拷(x1-x2)锟絚(y1-y2)锟斤拷平锟斤拷锟斤拷)

锟斤拷锟絇(gu锟斤拷n)锟斤拷锟絔锟斤拷

锟斤拷锟斤拷锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)知锟絉锟絚锟絉锟斤拷

锟斤拷锟铰高匡拷锟結訊锟斤拷锟竭匡拷锟斤拷锟竭★拷锟斤拷前锟绞傦拷锟斤拷志愿锟斤拷锟�锟斤拷锟饺★拷謹锟�(sh锟斤拷)锟斤拷锟斤拷

锟竭匡拷锟絩锟絞锟斤拷锟斤拷全锟斤拷锟斤拷要锟斤拷(ji锟斤拷)锟絚

锟組锟斤拷"锟竭匡拷锟絎(w锟斤拷ng)"微锟脚癸拷锟斤拷號