X intercept: how to find the x intercept of Y=x^2-16x

Mdny said:
Please show me how to find the x intercept of
Y=x^2-16x
Click to expand...
1. For which variable should you be substituting the value "zero"? (here)

2. When you plug zero in for this variable, what equation is the result?

3. What do you get when you factor the right-hand side of this equation? (here)

4. What do you get when you solve the factors? (here)

5. So what are the x-intercepts?

6. When you graph the equation, do you get the same x-intercepts? (here) (This is a useful way of checking your numerical answer.)

If you get stuck, please reply with a clear listing of your thoughts and efforts so far, starting with your answers to my questions above.

Thank you! ;)
 
You must log in or register to reply here.
Top