**Answer:**

20/7 or 2 and 6/7

**Step-by-step explanation:**

This equation works out to 2/1 • 10/7, which we can easily see equals 20/7, or 2 and 6/7, by multiplying the numerators and denominators.

**Answer:**

f(2) = -3

**Step-by-step explanation:**

Let x= 2

What value is y when x=2

Y = -3 when x =2

f(2) = -3

A) I included a graph, look below.

B)

Input the y in x = y + 3.

x = (-4x - 3) + 3

x = -4x + 0

Add 4x to both sides.

5x = 0

Divide both sides by 5.

x = 0

Input that x value in y = -4x - 3

y = -4(0) - 3

y = 0 - 3

y = -3

(0, -3)

C)

Convert both equations to Standard Form.

x = y + 3

Subtract y from both sides.

x - y = 3

y = -4x - 3

Add 4x to both sides.

4x + y = -3

Add the equations together.

4x + y = -3

x - y = 3

equals

5x = 0

Divide both sides by 5.

x = 0

Input that into one of the original equations.

0 = y + 3

Subtract 3 from both sides.

-3 = y

(0, -3)

**Answer:**

15 units²

**Explanation:**

Well true that the calculations, it is true that the equation through solving a parallelogram is the same as the equation of a rectangle area.