exam Maths Puzzle Numerical Ability

create a graph of the following linear equalites
3x + 4y <12
x + 3y < 6
x > 0
y > 0

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exam Other Question

Tell wheather the given value of the varible is a solution of the equation.
4x+13=-9-3(x+9);x=-7.

Thanks for all the help! Show that 3.6123 (has a line over 123) is a rational number by writing it as a fraction of integers