Consider the following pair of equations:
y = –2x + 8
y = x – 1
explain how you will solve the pair of equations by substitution. show all the steps and write the solution in (x, y) form. (5 points)

y=-2x+8

y=x-1

Solve y=-2x+8 for y

Substitute -2x+8 for y in y =x-1

y=x-1

-2x+8=x-1

Add -x to both sides

-2x+8+-x=x-1+-x

-3x+8=1

Add -8 to both sides

-3x+8+-8=1+-8

-3x=-9

Divide both sides by -3

-3x/-3=-9/-3

x=3

Substitute 3 for x in y =-2x+8

y=-2x+8

y=(-2)(3)+8

Simplify both sides of the equation

y=2

Answer : y=2 and x=3

(3,2)

I hope that's help !

idk

step-by-step explanation:

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