book Maths Puzzle Numerical Ability

Graph the following linear equations and advise points:
3x-2y=12
and
y=2x+5

thanks!

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book Other Question

Please extract the square roots from the following problems, thank you.
1. 3(x+4)^2-54=0
2. 81x^2=16
Complete the Square:
1. -9x=5x^2-1 Factor

x4</sup> - x3</sup> - 7x2</sup> + x + 6 = 0

Possible answers:

a. (x-6)
b. (x-3)
c. (x-2)
d. (x+6)</PRE>