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moving in a straight line. Its height,...

moving in a straight line.
Its height, h metres above the ground, is given by 8s - 3h = -9, where s is the time in seconds after it starts moving. In the same animation, a mouse starts to move at the same time as the cat and its movement is given by -3s +h =1.

If yes, after how much time and at what height?

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