exam Maths Puzzle Numerical Ability

in which quadrant are the following points located? 3,-1
and can you explain so i can do the rest of them?
Thanks
Heather

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exam Other Question

Solve the following equation for X by using the quadratic formula.

4x^2+2x-4=0
Rewrite the expression as a sum, difference,and/or multiple of logarithms
log2[2 square root x / 3]