What is the numrecal expreion 4+5+-6

I believe you want us to simplify the expression.

Note that 5 + (-6) is the same as 5 - 6

Simplify

4 + 5 = 9

9 + (-6) = 9 - 6 = 3

3 is your answer

hope this helps

What is the slope and equation of a line perpendicular to the x-axis passing through point (-4,3)?

A: The slope is zero and the equation of the line is x=-4

B: The slope is undefined and the equation of the line is y=3

C: The slope is undefined and the equation of the line is x=-4

D: The slope is zero and the equation of the line is y=3