Maths parallel question?
回答 (2)
2017-02-10 4:34 pm
Slope of the line joining (1, 2) and (3, 6)
= (2 - 6)/(1 - 3)
= (-4)/(-2)
= 2
2x - y + 7 = 0 can be rewritten as y = 2x + 7
Slope of the line (2x - y + 7 = 0) = 2
Slope of the line joining (1, 2) and (3, 6) = Slope of the line (2x - y + 7 = 0)
Hence, the line joining (1,2) and (3,6) is parallel to the line 2x-y+7=0
= (2 - 6)/(1 - 3)
= (-4)/(-2)
= 2
2x - y + 7 = 0 can be rewritten as y = 2x + 7
Slope of the line (2x - y + 7 = 0) = 2
Slope of the line joining (1, 2) and (3, 6) = Slope of the line (2x - y + 7 = 0)
Hence, the line joining (1,2) and (3,6) is parallel to the line 2x-y+7=0
2017-02-10 5:55 pm
y = 2x + 7
m1 = 2
m2 = 4/2 = 2
m1 = m2
Thus lines are parallel
m1 = 2
m2 = 4/2 = 2
m1 = m2
Thus lines are parallel
收錄日期: 2021-04-20 19:31:43
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