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Eliminate the parameter t to find a simplified Cartesian equation of the form y = m x + b for {(x(t)= 5 - t),(y(t) = 2 - 4 t) :}

The Cartesian equation is y =

Guest Jun 4, 2015

Best Answer 

 #1
avatar+90052 
+10

x(t)  = 5 - t   →    t  = 5 - x  

 

y(t)  =  2 - 4t    so we have, by substitution...

 

y(x)  = 2 - 4(5 - x)   →   y = 2 - 20 + 4x    →   y = 4x - 18

 

Here's a graph of both forms......the lines overlay each other........https://www.desmos.com/calculator/fahnek1aoa

 

 

CPhill  Jun 4, 2015
 #1
avatar+90052 
+10
Best Answer

x(t)  = 5 - t   →    t  = 5 - x  

 

y(t)  =  2 - 4t    so we have, by substitution...

 

y(x)  = 2 - 4(5 - x)   →   y = 2 - 20 + 4x    →   y = 4x - 18

 

Here's a graph of both forms......the lines overlay each other........https://www.desmos.com/calculator/fahnek1aoa

 

 

CPhill  Jun 4, 2015

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