exam Maths Puzzle Numerical Ability

Graph the function y=x and y=2 times the square root of x, on the same graph (by plotting points if necessary). Show the points of intersection fo these two graphs.
Graph:
Points of intersection:

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Help with this problem.

#63 2x2-3x-9/2x2+3-9
^ the above is the power of 2 not multiply.

please show the process for solving. thanks Please help me with understanding Cramer's rule. Could you be so kind as to solve this problem and explain each step also? I have to find the ordered pair by using Cramer's rule. T