Pregunta
Graph the linear function. Give its domain and range. \( f(x)=-3 x+6 \)
Ask by Grant Hilton. in the United States
Feb 25,2025
Solución de inteligencia artificial de Upstudy
Respuesta verificada por el tutor
Responder
To graph the linear function \( f(x) = -3x + 6 \), plot the y-intercept at (0, 6) and the x-intercept at (2, 0). Draw a straight line through these points. The domain is all real numbers, and the range is also all real numbers.
Solución
We are given the linear function
f(x) = –3x + 6
Step 1. Find key points:
• To find the y-intercept, set x = 0:
f(0) = –3(0) + 6 = 6
So the y-intercept is at (0, 6).
• To find the x-intercept, set f(x) = 0:
0 = –3x + 6 ⟹ –3x = –6 ⟹ x = 2
So the x-intercept is at (2, 0).
Step 2. Graphing the Function:
1. Plot the y-intercept (0, 6) on the coordinate plane.
2. Plot the x-intercept (2, 0).
3. Draw a straight line through these two points because the graph of a linear function is a straight line.
4. You can extend the line in both directions.
Step 3. Domain and Range:
• Domain: For any linear function, x can be any real number. Thus, the domain is (–∞, ∞).
• Range: Since the line continues without end upwards and downwards (despite the negative slope), the range is also (–∞, ∞).
Summary:
• Graphing: The line passes through (0, 6) and (2, 0), with a slope of –3.
• Domain: All real numbers, (–∞, ∞).
• Range: All real numbers, (–∞, ∞).
Respondido por UpStudy AI y revisado por un tutor profesional
Como
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Extra Insights
To graph the linear function \( f(x) = -3x + 6 \), start by plotting the y-intercept, which is the point (0, 6). From there, use the slope of -3 (which can be written as -3/1) to move down 3 units and right 1 unit, giving you the next point (1, 3). Draw a straight line through these points, and you have your graph! The domain of this function is all real numbers, denoted as \( (-\infty, \infty) \), since you can input any value for x. The range is also all real numbers, \( (-\infty, \infty) \), because the output can take on any value as x varies.
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