Consider the given function. Where is the function decreasing?

the circle one

i'm sorry i don't know

step-by-step explanation:

the answer is ! ?

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