While exercising julie found that her heart was beating 12 times every 5 seconds. how many times was it beating per minute?

ok then what happened.

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

there are infinitely many solutions.