Find the equation of a line passing through the point (2,1) with a slope of -1. Your final answer should be put into slope intercept form.

y= -x+3

Step-by-step explanation:

Here we can use the point slop formula y-y1 = b(x-x1)

now let b = the slope and plug in the given values

y-1 = -1(x-2)

simplify

y-1 = -x+2

put into slope intercept form

y= -x+3

step-by-step explanation: 4 cause 2+2=4

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