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a) If y = x² - 3, what is the value of y
b) Some points on the graph of y=x²-3
have been plotted.
Use your answer to part a) to work out
which of the points A-E is correct.
*
-4
*
when x = 4?
-
-3
*
-2
+ix
y
20
15-
10-
-5-
O
5
x-+
N-X
2
*
3
*A
*B
*C
*D
*E
4
x

2 a If y x 3 what is the value of y b Some points on the graph of yx3 have been plotted Use your answer to part a to work out which of the points AE is correct class=


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