Does this graphs represent a function ? Why or why not ?
A
B
C
D

B. It passes the vertical line test.

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.

(-5,-28)

i graphed to on desmos.