What is the slope of the line through (2, -2) and (9,3)?

The slope I got using a calculator was 0.71 or 5/7. The slope can be calculated through the slope formula.

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.