exam Maths Puzzle Numerical Ability

Hi, can someone please help me graph the following:

1. x - 2y >= 4

2. y = 2x - 6

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exam Other Question

without numbers, I am having trouble with this one.

It takes r cm of ribbon to make a bow. We have s meters of ribbon. How many bows can we make?

b) 20% of 3x+12=p. What is For each of the following, find the vertex by completing the square:
a) y=-3x^2-6x+4
b) y=4x^2-12x-2
c) y=1/3x^2+2x-1
CAn someone please help me ??