Qualification > Math
IGCSE MATHS Doubts
haris94:
--- Quote from: Shazizzzle on May 13, 2010, 10:21:08 am ---Umm, I'm referring to variant 2.
One thing, was the gradient of the line parallel to it 3, or -3?
--- End quote ---
the gradient was -3
cause the equation of parallel line was 3x+y=18
so it becomes y=18-3x
the equation finally is
y=-3x+14
dsiddiqi11:
--- Quote from: Shazizzzle on May 13, 2010, 10:21:08 am ---Umm, I'm referring to variant 2.
One thing, was the gradient of the line parallel to it 3, or -3?
--- End quote ---
i think its 3, cuz parallel lines have same gradient
Shazizzzle:
--- Quote from: haris94 on May 13, 2010, 10:24:01 am ---the gradient was -3
cause the equation of parallel line was 3x+y=18
so it becomes y=18-3x
the equation finally is
y=-3x+14
--- End quote ---
Wow. :/
Dibss:
--- Quote from: Shazizzzle on May 13, 2010, 10:21:08 am ---Umm, I'm referring to variant 2.
One thing, was the gradient of the line parallel to it 3, or -3?
--- End quote ---
i did variant2 and grad was -3
--- Quote from: mohit1234 on May 13, 2010, 10:22:10 am ---i got y=-3x+14
--- End quote ---
SAME :D
--- Quote from: haris94 on May 13, 2010, 10:21:28 am ---i got exactly the same answers ;D
agreed, paper required more thinking but i think i (like Ari said) killed it 8)
--- End quote ---
WOOT WOOT ;D
dsiddiqi11:
guys for the boris speed question, i didnt multiply my answer by 2 to get the max speed, so how many marks do i get, i showed all of the working
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