How do you read the graph of a function?

Question

I can interpret functions in the formula form but I simply can’t understand how it can become a graph. How would you transform one into the other?

In: 46

Answer 1

For illustration let’s assume we have function in the form
y=f(x)
We select a suitable vector of values for x, perhaps
X=1:100
Calculate the corresponding y values.
Baby LP will
Plot y against x (with x by convention on the horizontal axis)

Now we can read of values of y for anq