How to multiply a positive rational number and a negative rational number

You multiply them like you would multiply anything, but the answer would be negative because a negative times a positive equals a negative.

positive

step-by-step explanation:

the quadrant is facing upwards

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have