Determine whether the given pair (x, y) is a solution of the given system of linear equations in each number. 1. (2, 3); x- y = - 2
3x + y = 3

2. (1, 1); 2x + 7y = 9
3x - 10y = -7

3. (-2, -1); 5x - 3y = -7
-x - y = 3

4. (0, 0 ); 8x - 4 y = 0
2x + 3y = 7

5. (1, 0); 3x = 3y + 3
y = 5x - 5

-6 is the correct option from the above given options

i don't know

step-by-step explanation:

look at the picture.

1.

ef : ab = 2 : 3

gf : cb = 2 : 3

gh : cd = 2 : 3

he : da = 2 : 3

2.

∠a ≅ ∠e

∠b ≅ ∠f

∠c ≅ ∠g

∠d ≅ ∠h

3.

use pythagorean theorem:

the length of the abcd trapezoid sides:

|ab| = 3 cm

|bc| = 10 cm

|cd| = 3(3) cm = 9 cm

|da| = 8 cm

the perimeter of abcd = 3 + 10 + 9 + 8 = 30 cm

the ratio of perimeters of the tarapezoids is equal 2 : 3.

substitute:

      cross multiply

      divide both sides by 3