Use the ray tool to graph ( f(x) = -|x …

Mathematics Questions

Use the ray tool to graph f(x)=−|x+2| First plot the endpoint of the ray, then plot any point on the ray.

Short Answer

The function ( f(x) = -|x + 2| ) takes the absolute value of ( (x + 2) ) and makes it negative, resulting in a downward-opening graph. Key points include ( (-2, 0) ), ( (-4, -2) ), and ( (0, -2) ), which are used to sketch an inverted “V” shape on a coordinate system.

Step-by-Step Solution

Step 1: Understand the Absolute Value Function

The given function is represented as f(x) = -|x + 2|. This means the function takes the absolute value of (x + 2), which will always yield a non-negative result, and then makes it negative. The graph of this function will open downward because of the negative sign in front of the absolute value.

Step 2: Determine Key Points

To plot the graph effectively, we identify crucial points from the function. The values of f(x) at specific x coordinates are essential:

  • For x = -2, f(-2) = 0
  • For x = -4, f(-4) = -2
  • For x = 0, f(0) = -2

These points give us a foundation for drawing the graph.

Step 3: Sketch the Graph

Now, using the identified points (-2, 0), (-4, -2), and (0, -2), we can sketch the graph. Start by plotting these key points on a coordinate system and connect them smoothly, ensuring the graph opens downwards. The overall shape will be a V, inverted due to the negative sign in front of the absolute value function.

Related Concepts

Absolute Value Function

A mathematical function that returns the non-negative value of a given expression, denoted as |x|, which represents the distance of x from zero on the number line.

Key Points

Specific values of the function at certain x-coordinates that help in defining the overall shape and position of the graph.

Graph Sketching

The process of visually representing a mathematical function on a coordinate plane, using identified points to create a visual depiction of the function’s behavior.

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