How do you stretch a function vertically?

Step-by-step explanation:

When we multiply a function by a positive constant, we get a function whose graph is stretched or compressed vertically in relation to the graph of the original function. If the constant is greater than 1, we get a vertical stretch; if the constant is between 0 and 1, we get a vertical compression

Step-by-step explanation:

what graph

step-by-step explanation:

i think its a.

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