Math Problem Statement

Bestimme rechnerisch die Koordinaten des Schnittpunkts zwischen den Geraden g und h. Der Graph von g besitzt die Steigung m = -1/3 und schneidet die y-Achse in P(0|2); der Graph von h verläuft durch die Punkte Q(0|-2) und R(6|-2). Zeichne die beiden Geraden in einem Koordinatensystem.

Solution

The problem is in German and can be translated to:

"Determine the coordinates of the intersection point of the lines gg and hh analytically. The graph of gg has a slope m=13m = -\frac{1}{3} and intersects the y-axis at point P(02)P(0|2). The graph of hh passes through the points Q(02)Q(0|-2) and R(62)R(6|-2). Draw both lines in a coordinate system."

Let's solve this step-by-step:

1. Equation of Line gg

Given:

  • Slope m=13m = -\frac{1}{3}
  • y-intercept P(02)P(0|2)

The equation of line gg in slope-intercept form y=mx+by = mx + b is: y=13x+2y = -\frac{1}{3}x + 2

2. Equation of Line hh

Given points:

  • Q(0,2)Q(0, -2)
  • R(6,2)R(6, -2)

Since both points have the same y-coordinate, line hh is a horizontal line. The equation is: y=2y = -2

3. Finding the Intersection Point

To find the intersection, set the equations equal to each other: 13x+2=2-\frac{1}{3}x + 2 = -2

Solve for xx: 13x=22-\frac{1}{3}x = -2 - 2 13x=4-\frac{1}{3}x = -4 Multiply by 3-3: x=12x = 12

Now, substitute x=12x = 12 into the equation of either line to find yy: y=2(since it’s the equation of line h)y = -2 \quad (\text{since it's the equation of line } h)

4. Intersection Point

Thus, the coordinates of the intersection point are: (12,2)(12, -2)

Would you like a detailed explanation of how we found the intersection, or have any further questions about this problem?

Follow-Up Questions

  1. How would the intersection point change if the slope of line gg were different?
  2. Can you determine the x-intercept of line gg using its equation?
  3. What is the general process to find the intersection point of two lines?
  4. How would you graph these lines in a coordinate system?
  5. What happens if two lines are parallel in terms of intersection points?

Tip

When finding the intersection point of two lines, set their equations equal to each other and solve for one variable, then substitute back to find the other variable.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Intersection of Lines

Formulas

Slope-intercept form: y = mx + b
Line equation based on two points
Setting two line equations equal to find the intersection point

Theorems

-

Suitable Grade Level

Grades 8-10