What type of number is 9090.9?

Rational Number

Step-by-step explanation:

Since 9090.9 is an integer or decimal, it is also a rational because rational means a number that can be represented a/b where a and b are integers and b is not equal to 0.

Hope this helps! :D

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c