The number of laughs (denoted by lll) can be defined as a function of the number of jokes (denoted by jjj), the amount of knowledge about the joke material (denoted by kkk), and the familiarity with the jokes (denoted by fff) using this formula:
l = \dfrac{j\cdot k^2}{f}l=
f
j⋅k
2

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

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