Analyze the Linear Function y = -x - 2: Increasing or Decreasing?

Question

Given the following function:

y=x2 y=-x-2

Is the function increasing or decreasing?

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Video Solution

Solution Steps

00:00 Is the function increasing or decreasing?
00:03 The function equation according to the given data
00:08 Minus is exactly like multiplying by (-1)
00:12 The function's slope is negative according to the given data
00:15 When the function's slope is negative, the function is decreasing
00:19 And this is the solution to the question

Step-by-Step Solution

To determine if the function y=x2 y = -x - 2 is increasing or decreasing, we analyze its slope.

  • Step 1: Identify the slope. The given function is in the form y=mx+b y = mx + b , where m m is the slope. Here, m=1 m = -1 .
  • Step 2: Analyze the slope. Since m=1 m = -1 , which is less than 0, the slope is negative.
  • Step 3: Conclude based on the slope. For a linear function, if the slope is negative (m<0 m < 0 ), the function is said to be decreasing.

Therefore, the function is Decreasing.

Answer

Decreasing