exam Maths Puzzle Numerical Ability

I have two problems i am unable to do can you help.
thanks
Problem 1 Graph the inequality.
y >=3x

Problem 2
Graph the inequality.
2x + 3y > 6

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exam Other Question
Find f(-3) if f(x) = -2x^3-8x^2+2x-1 PLEASE HELP. TOPIC: FINDING THE CONSTANT OF VARIATION

FIND THE CONSTANT OF VARIATION k.

M VARIES DIRECTLY WITH N;
M=144 WHEN N=8

THANKS
JMS