book Maths Puzzle Numerical Ability

please help me with this equation...
solve by any method.
y=-x-2
y=-3x+4

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book Other Question

To find the difference between the pair of points(-3,0) and(4,0). What is the difference? Can the solution set of the compound inequality x < -3 0r x > 5 be expressed as -3 > X > 5? Please explain.