Determine the Intersection Points of y = x(-x-1) with the X-axis

Question

Determine the points of intersection of the function

y=x(x1) 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 points with the X-axis, the Y value must = 0
00:07 Substitute Y = 0 and solve to find X values
00:13 Find what makes each factor in the product zero
00:16 This is one solution
00:23 This is the second solution
00:28 And this is the solution to the question

Step-by-Step Solution

To solve for the x-intercepts of the function y=x(x1) y = x(-x-1) , we set y y to zero and solve the equation x(x1)=0 x(-x-1) = 0 .

Step 1: Identify that the equation is already factored. Set each factor equal to zero:

  • x=0 x = 0
  • x1=0 -x-1 = 0

Step 2: Solve for x x in each case:
For x=0 x = 0 , the solution is x=0 x = 0 .
For x1=0 -x-1 = 0 , add 1 to both sides to get x=1 -x = 1 , then multiply by -1 to find x=1 x = -1 .

Thus, the points of intersection with the x-axis are at x=0 x = 0 and x=1 x = -1 .

Final Coordinates: Because these are x-intercepts, for both points, the y-coordinate is 0. Therefore, the points of intersection are (1,0) (-1, 0) and (0,0) (0, 0) .

The correct choice from the given options is (1,0),(0,0)( -1, 0 ), ( 0, 0 ).

Answer

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