exam Maths Puzzle Numerical Ability

hello,

how to solve by graphing:

2x - 3y = 12
3y - 2x = -12

thank you.

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exam Other Question

find the domain of each function
a)
h(x)= x+3/x-5
b)
P(x)= sq rt x^2+7 Natalie has some nickels, Dirk has some dimes, and Quincy has some quaters. Dirk has five more dimes than Quincy has quaters. If Natalie gives Dirk a nickel, Dirk gives Qunicy a di