exam Maths Puzzle Numerical Ability

Graph
-x + 3y = -9 by graphing the x and y intercepts.
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exam Other Question

Areas of 2 rectangles are 15 sq.cm and 60 sq.cm.What is the ratio from the 1st to the 2nd.
ThanKs for the help! Solve the system by graphing.
3x - y = 1
3x - y = 2