Napisz rownanie prostej rownoleglej do prostej o wspolczynniku kierunkowym m i przechodzodzacej przez punkt A
a)m=-2/3 A=(3,5)
b)m=1 A=(-2,-1)
c)m=3 A=(3,1)
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a]
y=ax+b
y=-⅔x+b
5=-⅔×3+b
b=5+2=7
y=-⅔x+7
b]
y=x+b
-1=-2+b
b=-1+2=1
y=x+1
c]
y=3x+b
1=3×3+b
b=1-9=-8
y=3x-8
A WIĘC .. :
a)
y = ax+b
y = -⅔x+b
5 = -⅔×3+b
b = 5+2=7
y = -⅔x+7
b)
y = x+b
-1 = -2+b
b = -1+2 = 1
y = x+1
c)
y = 3x+b
1 = 3×3+b
b = 1-9 = -8
y = 3x-8 :)
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