exam Maths Puzzle Numerical Ability

Find the area of a trapezoid whose vertices have coordinates
( -2,1), (2,1), (5,-3), and (-5,-3).

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exam Other Question

Graph the linear function of f(x)=-2 Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent.

3x-y=6
3x+4y=-9

I am so lost on how do this problem, please help!