Q: What does y equals 2x plus 3 equal?

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3

2x + 3 = 92x = 9 - 32x = 6x = 6/2x = 3

3.5

Both equations are equal and so: 3x+1 = 2x+3 3x-2x = 3-1 x = 2 and by substituting y = 7

No. They are parallel.

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It equals 8x+12

3

2x + 3 = 92x = 9 - 32x = 6x = 6/2x = 3

3.5

Both equations are equal and so: 3x+1 = 2x+3 3x-2x = 3-1 x = 2 and by substituting y = 7

x+3(x+1)=2x x + 3x + 3 = 2x 2x + 3 = 0 2x = -3 or x = -1.5

No. They are parallel.

I believe the converse is: if 2x equals 6 then x equals 3 inverse: if x doesn't equal 3 then 2x doesn't equal 6 contrapositive: if 2x doesn't equal 6 then x doesn't equal 3

4x+9=2x-6 2x=-15 x=-7.5 x equals -7.5.

-1

x = -2 and y = 3

4x + 3 = -3 + 2x + 14 2x + 3 = -3 +14 2x + 3 = 11 2x = 8 x=4