exam
Maths Puzzle
Numerical Ability
How do I determine which two equations represent perpendicular lines? (a) y = 4/7x - 3 (b) y = 3x -4/7 (c) y = -1/3x + 4/7 (d) y = 1/3x - 4/7?
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exam Other Question
solve each system by graphing
3x-6y=9
x-2y=3
evaluate the following expressions for x=-1, y=2
x-((y-1)^2)+2(x^2+2x)