Math Problem Statement

y = − 1/2x + 4

Solution

The equation y=12x+4y = -\frac{1}{2}x + 4 represents a straight line in slope-intercept form, which is y=mx+by = mx + b, where:

  • mm is the slope of the line.
  • bb is the y-intercept.

For this specific equation:

  • The slope m=12m = -\frac{1}{2}, indicating that for every unit increase in xx, yy decreases by 12\frac{1}{2} units.
  • The y-intercept b=4b = 4, meaning the line crosses the y-axis at y=4y = 4.

Properties of the Line:

  • Slope: 12-\frac{1}{2}
  • Y-intercept: (0,4)(0, 4)
  • X-intercept: Set y=0y = 0 and solve for xx.

To find the x-intercept: 0=12x+40 = -\frac{1}{2}x + 4 12x=4\frac{1}{2}x = 4 x=8x = 8 So, the x-intercept is at (8,0)(8, 0).

Would you like to see the graph of this line or have any further details?

Here are 5 questions related to this concept:

  1. How do you find the slope between two points on a line?
  2. What is the significance of the y-intercept in a real-world scenario?
  3. How would the line change if the slope were positive?
  4. Can you write the equation of a line parallel to this one?
  5. How do you determine if two lines are perpendicular?

Tip: The sign of the slope indicates the direction of the line; a negative slope means the line descends as it moves from left to right.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

Slope-Intercept Form: y = mx + b
X-Intercept Formula: Set y = 0 and solve for x

Theorems

Linear Equation Properties

Suitable Grade Level

Grades 8-10