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x = 2 + t y = -3 + 2t t = x – 2 t = (y + 3)/2 x – 2 = y + 3 2 2x – 4 = y + 3 y – 2x + 7 = 0 Finding the Cartesian Equation from a vector equation x = 2 + t 1 y -3 + 2 ( ) ( ) ( )

x = 2 + t y = -3 + 2t

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( ). ( ). ( ). x = 2 + t 1 y -3 + 2. Finding the Cartesian Equation from a vector equation. x = 2 + t y = -3 + 2t. t = x – 2 t = (y + 3)/2. x – 2 = y + 3 2. 2x – 4 = y + 3. y – 2x + 7 = 0. ( ). X = 4 + t 3 - PowerPoint PPT Presentation

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Page 1: x = 2 + t y = -3 + 2t

x = 2 + t

y = -3 + 2t

t = x – 2

t = (y + 3)/2 x – 2 = y + 3

2

2x – 4 = y + 3

y – 2x + 7 = 0

Finding the Cartesian Equation from a vector equation

x = 2 + t 1y -3 + 2( )( ) ( )

Page 2: x = 2 + t y = -3 + 2t

x = 4 + 3t

y = 1 + 5t

t = (x – 4) / 3

t = (y - 1) / 5 x – 4 = y - 1

3 5

5x – 20 = 3y - 3

3y – 5x + 17 = 0

Finding the Cartesian Equation from a vector equation

X = 4 + t 3y 1 + 5( )( )( )

Page 3: x = 2 + t y = -3 + 2t

x = -2

y = -9

Gradient is 5/3 so vector in the line is

3y – 5x + 17 = 0

Finding the Vector Equation from a Cartesian equation

X = -2 + t 3y -9 + 5( )( )( )

So (-2, -9 ) is on the line

1

5/3( )

3

5( )or