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What is the solution to the system of equations below? y = one-half x minus 4 and y = negative 2 x minus 9

 Feb 18, 2020
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y = (1/2)x  - 4

 

y = -2x  - 9

 

Set the y's equal

 

(1/2)x  - 4 =  -2x - 9      add 2x, 4  to both sides

 

(1/2 + 2)x =  - 5

 

(5/2) x = -5     multiply both sides  by  (2/5)

 

x = -5(2/5)  = -2

 

And  y  = -2 (-2) - 9 =   4 - 9 =  -5     

 

 

cool cool cool

 Feb 18, 2020

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