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which equation has the following characteristics?

y varies directly with x

y = 30 when x = 3

y = 30x

y=33−x

y = 27 + x

y = 10x

Given that δabc is similar to δdef, which is a possible trigonometric ratio for ∠d? a) tan d = 24 30 b) tan d = 30 24 c) tan d = 18 24 d) tan d = 24 18

Which ordered pair makes both inequalities true? y< 3x-1 and y> -x+4 4,0 1,2 0,4 2,1

Find two numbers if their ratio is 4: 7 and their difference is 123.