Question

Based on the graph of y=x^2-2x-3, what is the positive x intercept ?

Answer 1

@mathmale Please help me

Answer 2

Gladly!! but it'll be a few minutes.

Answer 3

OK thanks

Answer 4

Because this is a quadratic function, Daniel, the graph crosses the horizontal or x-axis in two places. One of these two places, a point on the x-axis, has a positive x-component.

Supposing I were to give you the function f(x)=x^2 - 2x -3 and then to ask you to set it equal to zero (0).

x^2 - 2x - 3 = 0. What have you done in the past to find the zeros / roots / solutions?

Answer 5

Possible methods for that include:
1. Quadratic formula
2. Factoring
3. Graphing

If you need a refresher on this material, just say so.

Answer 6

I got it

Answer 7

1 is the positive intercept

Answer 8

Just out of curiosity, what is the other root / x-intercept / solution?

Answer 9

-4

Answer 10

I believe it's -3. Daniel, glad to work with you. Thank you very much for the medal!
'Til next time!

Answer 11

Thank you, see you next time