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Pie
3 years ago
9

What is the value of 9y-9 given that -2y+6=2

Mathematics
1 answer:
Olegator [25]3 years ago
7 0
First we use the quation given to solve for y.

-2y + 6 = 2 ------> Subtract 6 from both sides. (-6+2=-4)
-2y = - 4 ------> Divide both sides by -2 (-4/-2=2)
y = 2

Now you substitute the value of y or 2 into the first expression.

9(2)-9----> Multiply
18-9------->Subtract
9

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Let's do it step by step:

First we need to understand that moving upwards would be addition to y-coordinates, while moving downwards would be deduction to the y-coordinates.

Moving to rightwards would be addition to x-coordinates and leftwards would be deduction to x-coordinates.

As we moved down by 1 unit and up for 2 units, it means that we are originally upward for one unit and downward by 2 units, which makes downwards for 1 units and would be -1 to the y-coordinates:

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Therefore the start would be (-3,0).

Hope it  helps!


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