A one-to-one function is defined as "one-to-one because it is a function in which each y-
value matches only one x-value"
True
False

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.