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Q: 3x plus 2y equals 10 2x plus 5y equals 3?

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10-2y

(12, 1)

2y = -10y = -58 - 2x - 2(-5) = -108 - 2x + 10 = -10-2x = -10 - 182x = 28x = 14Check:2y = 8 - 2x - 2y = -102(-5) = 8 - 2(14) - 2(-5) = -10-10 = 8 - 28 + 10 = -10-10 = -20 + 10 = -10-10 = -10 = -10

parallel

The slope of the line of 2x plus 2y equals 7 is (7/2x - 1).

-2x=2y+5 +2x -2y -2y=2x+5 /-2 y=-1/1+2.5

4x + 2y = 20 2y = -4x + 20 y = -2x + 10.......but you may also write it as y = 10 - 2x.

y = -2x+10

4x+2y = 20 2y = -4x+20 y = -2x+10

X + ( 2Y - 2X - Y ) is equal to Y - X

x+2y-2x-y=x y-x=x y=2x

The solution is:- x = 0 and y = 5

2y = 4x + 4y = 2x + 2

k

Sum Numb!

(3, 2)

(-2, 4)

(-1, 5)

(2, 1)

(-1, 0)

(-1, 5)

x = 12, y = 1

Any pair of numbers where the 'y' is 5 more than the 'x'. There are an infinite number of suitable pairs. 2y-2x=10 2y-2x+2x=10+2x 2y=2x+10 divide both side by 2. y=x+5

x = 4 and y = -1 (4. -1)

-2x + 2y = 4 is equivalent to twice -2 + y = 2 which is the equation of a straight line.