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A corrie is an armchair shaped depression on a mountain slope left by a cirque glacier. These are the steps leading to its formation: 1) Snow collects in a hollow on a mountain slope (normally the north f...

On the y-axis: if the graph is moved vertically up by 'n', its affecting the y value by a positive amount, so your (x,y) becomes (x,y+n) and your equation becomes y+n=f(x) rather than y=f...