Identify the domain and range of the following relations.

{(2,5),(4,21),(-8,-8),(-15,5)}

{(7,5),(3,21),(-1,6),(5,7)}

{(-2,-4),(-4,2),(4,-4),(1,5)}

{(2,5),(2,2),(4,8),(5,5)}

{(5,9),(8,2),(7,8),(1,3)}

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

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