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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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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( )( ) ( )
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( )( )( )
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