Which line is perpendicular to a line that has a slope
of Negative one-third?

To find a line perpendicular to a line with a given slope, you just need to find the opposite reciprocal of the slope.

We are given a slope of .

Start by multiplying it by . This means that if it was a negative number, it would become positive, and vice versa.

Now, flip the numerator and denominator. This is called finding the reciprocal.

This means that any line with a slope of would be a correct answer.

c.

step-by-step explanation:

b. astronomers