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Sagot :

Answer:

(2, 18) and (-3, -7)

Step-by-step explanation:

y = 5x + 8                     Substitute the value for y into the second equation

-10x + 2y = 16

-10x + 2(5x + 8) = 16

-10x + 10x +16 = 16

       16 = 16  True  

These two equation are the same line. So pick one of the equation to check which ordered pairs are true solutions.

Using y = 5x + 8

(0, -6)         -5 = 5(0) + 8 ; -6 = 8  No

(-1, 9)           9 = 5(-1) + 8;   9 = -5 + 8 ;  9 = 3 No

(2, 18)          18 = 5(2) + 8;  18 = 10 + 8 = 18;  18 = 18    Yes

( -3, -7)         -7 = 5(-3) + 8;  -7 = -15 + 8;  -7 = -7    Yes

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