Mathematics
Junior High
math๐ปโโ๏ธ
4๏ธโฃใฎ1ใ2ใ3ใ4ใๆใใฆใใ ใใ๐ฆ
่งฃ็ญใจ่งฃ่ชฌใ่ผใใฆใใใใจใใใใใใงใ๐โโ๏ธโจ
โปๅ็ใๅๅฏพใงใใฟใพใใ๐ฃ๐ฆ
4
ๅณใฎๅณใซใใใฆ, 2็นA, Bใฏใใใใ็ด็ทโใจx่ปธ,y
่ปธใจใฎไบค็นใงใใ, 2็นC, Dใฏใใใใ็ด็ทmใจy่ปธ,็ด
็ทl ใจใฎไบค็นใงใใใ ็นPใฏ็ทๅADไธ (ใใ ใ, 2็นA, D
ใฏ้คใ)ใๅใ็นใง,็นOใฏๅ็นใงใใใ 2็นA,Bใฎๅบงๆจ
ใฏใใใใ (16,0), (0, 16) ใงใใใ ็ด็ทmใฎๅผใฏ
y=2x+10ใงใใใ
ใใฎใจใใๆฌกใฎๅๅใใซ็ญใใใใใ ใใๅบงๆจ่ปธใฎๅไฝ
ใฎ้ทใใฏ1cmใจใใใ
(1) ็ด็ทlใฎๅผใๆฑใใใ
(2) ็นPใฎxๅบงๆจใ6ใฎใจใ, DCPใฎ้ข็ฉใฏไฝcmยฒใ,ๆฑใใใ
a
y
B
D
(4) POAใฎ้ข็ฉใโณDCP ใฎ้ข็ฉใฎ2ๅใงใใใจใ, ็นPใฎๅบงๆจใๆฑใใใ
m
X
(3) ็นPใฎxๅบงๆจใใใ ใใฎใจใ, POAใฎ้ข็ฉใฏไฝcmยฒใ, tใ็จใใๆใ็ฐกๅใชๅผใง่กจใใ
Answers
(๏ผ)ใจ( 2 )ใ้็ใงใใ๐ฆ
ๅใใใฅใใใฆใใฟใพใใ๐๐ปโโ๏ธ๐ง
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