Given that the image of a positive scale function passes through the point m (- 1,5), find the analytic expression of this function?

The analytic formula is y = - 5x
Because the function is a positive proportional function
So the image goes through the origin
Bring in x = - 1, y = 5
5 = - K
That is, the value of K is - 5
So the analytic expression of the function is y = - 5x
Very tired~

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