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Clearnote
Q&A
Senior High
Mathematics
間違ってるところってどこですか😭😭😭
Mathematics
Senior High
almost 4 yearsago
ヒ
間違ってるところってどこですか😭😭😭
p.78 15 143 直線 x-2y+1=0 に関して,点A(4, -5) と対称な点Bの座標を求めよ。 x - 2y + 1 = 0 x Y - 2x - y = - 2²²1²² (2+4 6+5) x 2 Y = 1/2 x² + 1/2/2/2 LY エⅠI (4,-5), (a,b) 1 x 1/2 × b +h 2 X a-4 0/4x b+5 0/4 = -1x2 -2 (0-4) b + 5 = -2at g p=-2a+3 Date 11 No. x2 -2.5+5 -42x+1=0 Q+4 -2b-10 + 2 (8) a-26-4 = 0 a-2(-2a+3)-4=0 a + 4a - 6 -4 = 0 50=10 a = 2 6 X 0+4 7 x 2 2+4-26-10+2=0 -26=-2 b=1. (-2.7) (2.2) x 2 145
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