Find Intersection Points of y = (4x+1)(x-2) with the X-Axis

Determine the points of intersection of the function

y=(4x+1)(x2) y=(4x+1)(x-2)

With the X

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:10 Let's find where our line crosses the X-axis.
00:13 Remember, at these points, the Y value is zero.
00:17 So, set Y to zero and solve the equation to find X.
00:23 Look for values that make each part of the equation zero.
00:29 Great! We found one solution here.
00:45 And here's another solution.
00:50 That's how we solve this problem. Well done!

Step-by-step written solution

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1

Understand the problem

Determine the points of intersection of the function

y=(4x+1)(x2) y=(4x+1)(x-2)

With the X

2

Step-by-step solution

To find the points of intersection of the function y=(4x+1)(x2) y = (4x+1)(x-2) with the x-axis, we need to solve this equation where y=0 y = 0 . Therefore, we set (4x+1)(x2)=0 (4x+1)(x-2) = 0 .

By applying the Zero Product Property, we know that either 4x+1=0 4x+1 = 0 or x2=0 x-2 = 0 .

  • Solving the first equation 4x+1=0 4x+1 = 0 , we have:
  • 4x=1x=14 4x = -1 \Rightarrow x = -\frac{1}{4}
  • Solving the second equation x2=0 x-2 = 0 , we have:
  • x=2 x = 2

Therefore, the points of intersection with the x-axis, where the function equals zero, are (14,0) (-\frac{1}{4}, 0) and (2,0) (2, 0) .

Thus, the solution to the problem is (2,0),(14,0) (2,0),(-\frac{1}{4},0) .

3

Final Answer

(2,0),(14,0) (2,0),(-\frac{1}{4},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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