Question 53506
y= x^2 + 4x - 1
Answer:
If x=0, then y=-1
If y=0, we get a quadratic equation,
x^2 + 4x - 1=0 
Solve for x, using quadratic formula
 x = (-b +- sqrt( b^2-4*a*c ))/(2*a) 
You'll get the x intercept.