Algebra-1

Point M is located in the complex coordinate system where the horizontal axis represents the real part (Re) and the vertical axis represents the imaginary part (Im). Given that the horizontal coordinate is 4 and the vertical coordinate is 3, we can evaluate the provided options:

1.4 + 3i: This is the correct representation of point M in the complex plane, indicating a real part of 4 and an imaginary part of 3.

2.-7 + 9i: This represents the point (-7, 9) in the complex plane, which does not match the specified coordinates.