Solve by substitution. i need the full work also. y=x-2 y=4x+1

x = -1

y = -3

Step-by-step explanation:

We can substitute the 2nd equation into the y of the first equation.

4x + 1 = x-2

Subtract x from both sides.

3x + 1 = -2

Subtract 1 from both sides.

3x = -3

x = -1

substitute this x value into the first equation

y = x - 2

y = -1 - 2 = -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

a

step-by-step explanation: