Question

A solution to the equation f(n)= -3 is 5. What are the coordinates of a point on the graph of f ?

Answer 1

The coordiantes of f(5) is equal to 9 are (x,y) = (5, 9) because f(5)=f(x=5) and the value of f correspond to the values in the y-axis.

For part b we have f(n) = -3 is 5, again here x = n and y = 5.