Solve for Intersections: Finding X in y = 2x(x - 6) with the X-Axis

Question

Determine the points of intersection of the function

y=2x(x6) y=2x(x-6)

With the X

Video Solution

Solution Steps

00:09 Let's find where the graph crosses the X-axis.
00:13 At those points, the Y value will be zero.
00:17 So, we set Y equal to zero, and figure out the X values.
00:22 We need to find what makes each part equal to zero.
00:27 Great job! That's one solution.
00:41 Here's the second solution.
00:46 And that's how we solve the problem!

Step-by-Step Solution

To solve this problem, let's determine the points where the function y=2x(x6) y = 2x(x-6) intersects the X-axis.

Step 1: Set the quadratic function equal to zero to find the roots, which represents the X-axis intersection points:
2x(x6)=0 2x(x-6) = 0 .

Step 2: Consider each factor of the product expression separately:
Set 2x=0 2x = 0 and solve for x x :
x=0 x = 0

Step 3: Set the second factor equal to zero as well:
Set x6=0 x-6 = 0 and solve for x x :
x=6 x = 6

Step 4: These solutions give us the x-coordinates of the intersection points. Since we set y=0 y=0 , the points of intersection are
(0,0)(0, 0) and (6,0)(6, 0).

Therefore, the function intersects the X-axis at the points (0,0)(0, 0) and (6,0)(6, 0).

This matches with the choice labeled as choice 2: (6,0),(0,0) (6,0),(0,0) .

Answer

(6,0),(0,0) (6,0),(0,0)