Question

Which is the graph of f(x) = (Notice the increments on the graph are by 2.)

Answer 1

Notice that the leading coefficient is equal to -1; therefore, the curve that represents the equation opens downwards. Then, so far our only two options are the second and third options.

Now, notice that option 3 includes the point (0,0) whereas the function f(x) when x=0 gives us:

$f(0)=0+0+0+0+4=4$

Therefore, only the second option can be the answer