exam Maths Puzzle Numerical Ability

how do you do distance and circles? like y=(1/4)x-1

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exam Other Question

Find the solution(s) for when f(x) = -4 if f(x) = x^2 � x and f(x) = 12.
a. x = {4}
b. x = {-3, 4}
c. x = {-4, 3}
d. No solution Write the following equation of a circle in center-radius form.
x^2+y^2+4x+6y+4=0