SOLUTION: The parabola y=x^2-3 intersects the x-axis at two points, P and Q. What is the distance from P to Q?

Algebra ->  College  -> Linear Algebra -> SOLUTION: The parabola y=x^2-3 intersects the x-axis at two points, P and Q. What is the distance from P to Q?      Log On


   

Question 394701: The parabola y=x^2-3 intersects the x-axis at two points, P and Q. What is the distance from P to Q?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

y = x^2-3 |x-intercepts when y = 0, x = ± sqrt%283%29 d between = 2sqrt%283%29

Using the vertex form of a parabola, y=a%28x-h%29%5E2+%2Bk where(h,k) is the vertex

vertex is Pt(0,-3)