exam Maths Puzzle Numerical Ability

Solve the following system by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent
10x+2y=7
y=-5x+3

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exam Other Question

If P(4,-5) is a point on the graph of the function y=f(x), find the corresponding point on the graph of y=2f(x-6). if a quadrilateral is inscribed in a circle its opposite angles will be supplementary. find the measure of angle A if the measure of angle C=40 degrees