Answer:
x=-3, and x=1
Step-by-step explanation:
To solve for x you must set y to 0, since the solutions for x only exist when y is zero (the x intercepts)
0=x^2+2x-3
There are a couple of ways you can solve this quadratic equation
- by factoring
- by completing the square
- by the quadratic formula
Factoring is the simplest option in this case
the product of two numbers equals -3
the sum of the two numbers is 2
You can tell that the two numbers are 3 and -1
Now, you can factor the equation
(x+3)(x-1)=0
So the solutions are x=-3, and x=1
