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astra-53 [7]
3 years ago
7

WILL GIVE BRAINLIEST!!!

Mathematics
1 answer:
ankoles [38]3 years ago
6 0

Answer:

C. (-3, 1)

Step-by-step explanation:

- x + y = 4 \\  \therefore \:  y = x + 4...(1) \\ \& \:  3x - 4y =  - 13....(2) \\ substituting \: y = x + 4 \: in \: equation \: (2) \\ 3x - 4(x + 4) =  - 13 \\   3x - 4x - 16 =  - 13 \\  - x = 16 - 13 \\  - x = 3 \\  \huge \red{ \boxed{x =  - 3}} \\ plug \: x =  - 3 \: in \: equation \: (1) \\ y =  - 3 + 4 \\ \huge \purple{ \boxed{y = 1}} \\  \\  \orange{ \boxed{ \bold {\therefore \: (x, \:  \: y) = ( - 3, \:  \: 1)} }}

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Step-by-step explanation:

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Let t_1 be the time taken to drive to lake.

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