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Use intercepts to help sketch the plane. \(2 x+5 y+z=10\)

Short Answer

Expert verified
The intercepts are (5, 0, 0), (0, 2, 0), and (0, 0, 10).

Step by step solution

01

Find the x-intercept

To find the x-intercept, set \(y\) and \(z\) to zero and solve for \(x\). \(2x + 5(0) + 0 = 10\). Thus, \(2x = 10\) and \(x = 5\). The x-intercept is \((5, 0, 0)\).
02

Find the y-intercept

To find the y-intercept, set \(x\) and \(z\) to zero and solve for \(y\). \(2(0) + 5y + 0 = 10\). Thus, \(5y = 10\) and \(y = 2\). The y-intercept is \((0, 2, 0)\).
03

Find the z-intercept

To find the z-intercept, set \(x\) and \(y\) to zero and solve for \(z\). \(2(0) + 5(0) + z = 10\). Thus, \(z = 10\). The z-intercept is \((0, 0, 10)\).
04

Sketch the plane using intercepts

Plot the intercepts \((5, 0, 0)\), \((0, 2, 0)\), and \((0, 0, 10)\) on a 3D coordinate system. Draw a plane that passes through these three points. This plane represents the equation \(2x + 5y + z = 10\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Understanding the x-intercept in 3D Geometry
In 3D coordinate geometry, the x-intercept is the point where a plane crosses the x-axis. To find it, we set the other variables, y and z, to zero and solve the equation for x. For the equation \(2x + 5y + z = 10\), we simplify it by substituting zero for y and z, which gives us \(2x = 10\). Solving this equation, we find that \(x = 5\). Therefore, the x-intercept is the point \((5, 0, 0)\).

Key points about the x-intercept:
  • It is found on the x-axis.
  • Other coordinates \(y\) and \(z\) must be zero.
  • Represents the location where the plane first touches or "intersects" the x-axis directly.
Finding the x-intercept helps us understand how a plane is situated in the 3D space and where it meets the x-axis.
Finding the y-intercept in 3D Space
The y-intercept represents the point where the plane intersects the y-axis. To find this point from a given plane equation like \(2x + 5y + z = 10\), set \(x\) and \(z\) to zero. This simplifies our problem to \(5y = 10\). Solving for \(y\), it becomes clear that \(y = 2\). Thus, the y-intercept is \((0, 2, 0)\).

Here is what you need to know about the y-intercept:
  • It exists on the y-axis.
  • With x and z being zero, calculations focus solely on y.
  • It shows the plane's interaction with the y-axis, which is crucial for 3D mapping.
The y-intercept is valuable when sketching planes because it gives us an exact intersection with the y-axis, providing one of the necessary anchors in space.
Discovering the z-intercept
The z-intercept is located where a plane intersects the z-axis. This happens when both x and y are zero. So, for the given equation \(2x + 5y + z = 10\), setting \(x = 0\) and \(y = 0\) simplifies it to \(z = 10\). The z-intercept is then the point \((0, 0, 10)\).

Important characteristics of the z-intercept include:
  • It lies on the z-axis alone.
  • Both x and y values must be zero.
  • The z-intercept defines how the plane reaches out towards the z-direction.
Understanding the z-intercept is important as it helps forge the plane's placement in 3D space, particularly on the z-axis, aiding in accurately sketching the plane's orientation.

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