Sally jogged 100 meters in 20 seconds. Jennifer jogged 4 meters per second. Who was traveling at a faster speed? Explain how you know. I dont get it

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

step-by-step explanation: