Please help i will give brainliest...
I need in form of y=mx+b Thank you!

y = -2x + 3

Step-by-step explanation:

Let equation of the line be y = mx + b

Since the line is perpendicular to y = 1/2x - 10,

product of the gradient of both lines = -1

therefore,

1/2 x m = -1

m = -2

since it passes through (4, -5),

sub (4, -5):

-5 = -2(4) + b

b = 3

therefore, equation of the line is y = -2x + 3

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

i would say b) is your answer

sorry if im wrong

step-by-step explanation: