exam Maths Puzzle Numerical Ability

I tried this over and over and can not get this:

Solve the following system by graphing:

3x - 6y = 9 :EQUATION 1
X - 2Y = 3 : EQUATION 2

Y-INTERCEPT AS AN ORDERED PAIR =>

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exam Other Question

please help me with this equation:

what is the square roots of 800, 216, 7 radical 27?
Directions: graph the solution set of each of the following inequalities.

3x >= 2x -4