(a) what does the equation x=4 represend in r2 ? what does it represend in r3? illustrate with sketches. (b) what does the equation y=3 represent in r3? what does z =5 represent? what does the pair of equations y=3,z=5 represent ? in other words, describe the set of points (x, y,z) such that y=3 and z=3. illustrate with sketch

if this is really you s much. i only have 3 points left and i have 2 questions to ask

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