Solve systems of two linear equations by using the linear combination method

1). 3x+2y=6

-6x-3y=-6

2). 7x-4y=-3

2x+y=15

3). 5x+6y=-16

2x+10y=5

4). -15x-2y=-31

4x+6y=11

5). 7x+2y=-3

-14x-4y=6

6). -5x+2y=-10

3x-6y=-18

solve using either algebraic method (substitution or combination)

1). x-y=3

-2x+2y=-6

2). -3x+y=11

5x-2y=-16

3). x-4y=-3

-3x+8y=-1

4). -3x+7y=6

5x-y=10

5). 3x-7y=20

-11x+10y=5

6).4x+9y=-10

-8x-12y=8

7). -x+5=17

2x-10y=-34

Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright

Which graph correctly represents the equation  y=−4x−3? guys me iam not trying to fail summer school and will offer 40 points for who ever me with the next 3 problems and will give brainlest