Is x2+y2=25 a function

no

Step-by-step explanation:

its supposed to be 2x+2y=25

so its not a function.

answer: i guess 5 units?

step-by-step explanation:

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