Determine Intersection Points for y = (x - 11)(x + 1)

Determine the points of intersection of the function

y=(x11)(x+1) y=(x-11)(x+1)

With the X

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:09 Let's find where the graph crosses the X-axis.
00:13 At these points, the Y value is zero.
00:17 So, we set Y to zero and solve for X.
00:22 Look at each factor to see what makes them zero.
00:28 Here, we have one solution for X.
00:37 And here is another solution for X.
00:45 That's how we find the solution to the problem!

Step-by-step written solution

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1

Understand the problem

Determine the points of intersection of the function

y=(x11)(x+1) y=(x-11)(x+1)

With the X

2

Step-by-step solution

To determine the points where the function intersects the x-axis, we need to find the x-intercepts. These occur where y=0 y = 0 .

The function is given as y=(x11)(x+1) y = (x-11)(x+1) . To find the x-intercepts, we set this function equal to zero:

(x11)(x+1)=0 (x-11)(x+1) = 0 .

This equation implies that the product is zero when either x11=0 x-11 = 0 or x+1=0 x+1 = 0 .

Solving these equations, we find:

  • x11=0 x-11 = 0 leads to x=11 x = 11 .
  • x+1=0 x+1 = 0 leads to x=1 x = -1 .

Thus, the points of intersection with the x-axis are (1,0)(-1, 0) and (11,0)(11, 0).

Therefore, the solution to the problem is (1,0),(11,0)(-1, 0), (11, 0).

3

Final Answer

(1,0),(11,0) (-1,0),(11,0)

Practice Quiz

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The following function has been graphed below:

\( f(x)=-x^2+5x+6 \)

Calculate points A and B.

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