*THIS IS THE GRAPH FROM MY LAST QUESTION*

B are c

Step-by-step explanation:

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.

the first one, all those points on the line just make a strait line.