12th grade  Math
posted by Eliza on .
1.) Explain why 815i = 17

The magnitude of a complex number is defined in the complex space where the real numbers are on the horizontal axis, and the complex (imaginary) part is on the vertical axis.
The magnitude is defined to be the distance of the given point to the origin, namely for a complex number
a+bi,
a+bi= √(a²+b²)
So
8+15i=√(8²+15²)=17 
What Is The Graph Of X=y