Math Problem Statement
Graph the equation y = -1/2x + 4 by plotting two points and drawing the line.
Solution
The equation provided in the image is:
This is a linear equation in slope-intercept form, where:
- The slope is ,
- The y-intercept is 4.
Steps to plot the graph:
-
Plot the y-intercept:
- The y-intercept occurs when , so plot the point . This means that one of the points should be at .
-
Use the slope to find a second point:
- The slope is , meaning for every 2 units you move to the right (positive -direction), you move 1 unit down (negative -direction).
- Starting from , move 2 units to the right, arriving at , and 1 unit down, arriving at . The second point is .
-
Connect the points:
- Use the blue highlighter to draw a straight line connecting and .
If you'd like more details on graphing linear equations or need further clarification, feel free to ask!
Related Questions:
- How do you graph a line with a positive slope?
- What happens to the graph when you change the slope to ?
- How do you find the x-intercept of a linear equation?
- Can you explain how the slope affects the steepness of the line?
- What would happen if the y-intercept was negative?
Tip: Always start graphing a line by plotting the y-intercept first, then use the slope to determine other points.
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Slope-Intercept Form
Graphing
Formulas
Slope-intercept form: y = mx + b
Slope formula: rise/run
Theorems
Graphing a line using slope and y-intercept
Suitable Grade Level
Grades 8-10