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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: vidang on October 31, 2010, 09:51:04 pm

Title: insight 06
Post by: vidang on October 31, 2010, 09:51:04 pm

linear module
question 9
im getting c
y=1/4x^2
why is it E?


the exam: http://vcenotes.com/forum/index.php/topic,31845.0.html

Title: Re: insight 06
Post by: jasoN- on October 31, 2010, 09:53:18 pm

y = kx^2
At x^2 = -1 and y = -4: (key point x^2 is -1 NOT x = -1)
-4 = -1k
k=4
Therefore y = 4x^2

Title: Re: insight 06
Post by: vidang on October 31, 2010, 09:55:16 pm

LOLOL i did that exact thing but got 1/4
clumsy me