Determine the X-Axis Intersections of the Quadratic Function y = x(x + 1)

Question

Determine the points of intersection of the function

y=x(x+1) y=x(x+1)

With the X

Video Solution

Solution Steps

00:00 Find the intersection points with the X-axis
00:03 At the intersection with the X-axis, the Y value must = 0
00:07 Substitute Y = 0 and solve for X values
00:13 Find what makes each factor in the product zero
00:16 This is one solution
00:27 This is the second solution
00:31 And this is the solution to the question

Step-by-Step Solution

To solve the problem of finding the intersection points of the function y=x(x+1) y = x(x + 1) with the x-axis, follow these steps:

  • Step 1: Understand that the function intersects the x-axis where y=0 y = 0 .
  • Step 2: Set up the equation x(x+1)=0 x(x + 1) = 0 .
  • Step 3: Solve each part of the product for zero:
    • For x=0 x = 0 , the first solution is x=0 x = 0 .
    • For x+1=0 x + 1 = 0 , solving gives us the second solution x=1 x = -1 .

These solutions, x=0 x = 0 and x=1 x = -1 , correspond to the points (1,0)(-1, 0) and (0,0)(0, 0) on the Cartesian plane. Thus, the points of intersection are (1,0)(-1, 0) and (0,0)(0, 0).

The correct choice from the provided options is:

  • : (1,0),(0,0)(-1, 0), (0, 0)

Therefore, the solution to the problem is that the function y=x(x+1) y = x(x + 1) intersects the x-axis at (1,0),(0,0)( -1, 0 ), ( 0, 0 ).

Answer

(1,0),(0,0) (-1,0),(0,0)