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How do I graph a linear inequality with only one variable, like y≤2y \le 2?

To graph y≤2y \le 2, first draw a horizontal boundary line at y=2y = 2. Make the line solid because the inequality includes equality. Then, shade the region below the line because y must be less than or equal to 2.

Conditions

  • The inequality restricts only one variable (y).
  • The inequality is non-strict (≤).

Reasoning, step by step

  1. Identify the boundary line y=2y = 2.
  2. Draw a solid horizontal line at y=2y = 2 to indicate that points on the line are included.
  3. Shade the region below the line to represent all y-values less than 2.

Example

The speaker explains, "because it's less than or equal to, it's a solid line as opposed to a dashed line," and "because it's less than, we need to shade below it rather than above it."

Common misconceptions

  • Drawing a dashed line instead of a solid line.
  • Shading above the line instead of below.

Watch the explanation

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Answers are generated from source material and independently checked. Consult the original video or creator if something is unclear.