Which of the following correctly states the condition that guarantees a real-valued…
MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions
Problem
Which of the following correctly states the condition that guarantees a real-valued function f is one–one when its graph is inspected in the Cartesian plane?
(a) Every horizontal line intersects the graph of f exactly once.
(b) Every vertical line intersects the graph of f at most once.
(c) Every horizontal line intersects the graph of f at most once.
(d) The slope of the graph of f is positive at every point.