exam Maths Puzzle Numerical Ability

I am having problems with graphing. Can you help me solve and graph the following problem?

1. Plot the graph of the equations 2x-3y=6 and 2x-y=-10 and interperet the result.

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exam Other Question

SUPPOSE TAN X=-4/3 WITH 0<X<PI. FIND THE EXACT VALUE OF TAN(X+PI) Twice the sum of a number and 8 is 40. Find the number