exam Maths Puzzle Numerical Ability

Solve the system by graphing

x + y = 3
x + y = -1

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exam Other Question

which is an equation of the axis of symmetry of the grapd y=x^2-4x+1? Find the domain and range of the function
f(x)=(x-a)^2+1

Find the equation of the axis of symmetry of the parabola.
f(x)=(x+1)^2+9

Find the zeros of the polynomial function