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Linear Equation in Two Variables
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Linear Equation in Two Variables
An equation that can be written in the standard form Ax + By = C, where A, B, and C are
real numbers
, and A and B are both
nonzero
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Not a Linear Equation in Two Variables:
3x^2
- y =
9
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Determine whether or not each equation is a
linear
equation in two variables
1. 2x^2 - 3x + 2 =
0
2. 3x -
4y
= 8 -
4x
3. x -
5
=
3x
- 3
4. x -
3x
=
2
5. y +
7x
= 3
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Solution of Linear Equation
Ordered
pairs
that make the
equation true
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Determine if (-1, 3) is a solution of x + 3y = 8
(-1) + 3(3) =
8
-1 + 9 =
8
8
= 8
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Solve for y and complete the table of values. Plot the graph of the equation y =
4x - 1
1. y =
4x - 1
2.
x
y
3. 0
-1
4.
-1
-5
5. 1
3
6.
2
7
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Complete the table and plot the line y = 3x + 2
1. x y
2.
-2
3.
-1
4.
0
5.
1
6. 2
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