Question

How do you graph `f(x) = x^2-4x+8`?

Answer 1

Take a couple of points and connect them.

Explanation:

Step-by-step:

1. Draw the x and y axis.
2. Pick a couple of points of the function
   close to 0 (i.e. 1, 3, -2).
3. Find the value of the function at
   those points.
4. Mark the coordinates on the graph.
5. Find the vertical intercept (where it crosses the y-axis). To do this, simply plug in 0 for x and solve.
6. Connect these points.

That's valid if you're in high school. If you're in college/university math (i.e. Calculus), that's more complicated than that. Below is an image of what this graph should look like