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

Question

Determine the points of intersection of the function

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

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 to find X values
00:13 Find what makes each factor zero in the product
00:19 This is one solution
00:35 This is the second solution
00:40 And this is the solution to the question

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) .

Answer

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