Question

true or dalse this set of points represents a function {(2,9),(0,5),(1,7)}

Answer 1

True. The set of points \((2,9)\), \((0,5)\), and \((1,7)\) represents a function because each input (the first element of each ordered pair) is unique. In a function, each input must correspond to exactly one output. Here, the inputs \(2\), \(0\), and \(1\) are all different, so this set indeed represents a function.