Math Problem Statement

Solve the system below by graphing both equations using the intercepts. The equations are x + y = -4 and x - y = -2.

Solution

The image you provided shows a graph of two linear equations and asks to solve the system by graphing both equations using their intercepts. The equations are:

  1. x+y=4x + y = -4
  2. xy=2x - y = -2

To solve the system, we need to graph both equations by finding their intercepts (the points where the lines cross the x-axis and y-axis).

Steps:

  1. Equation 1: x+y=4x + y = -4

    • For the y-intercept, set x=0x = 0: 0+y=4y=40 + y = -4 \quad \Rightarrow \quad y = -4 So the y-intercept is (0,4)(0, -4).
    • For the x-intercept, set y=0y = 0: x+0=4x=4x + 0 = -4 \quad \Rightarrow \quad x = -4 So the x-intercept is (4,0)(-4, 0).
  2. Equation 2: xy=2x - y = -2

    • For the y-intercept, set x=0x = 0: 0y=2y=20 - y = -2 \quad \Rightarrow \quad y = 2 So the y-intercept is (0,2)(0, 2).
    • For the x-intercept, set y=0y = 0: x0=2x=2x - 0 = -2 \quad \Rightarrow \quad x = -2 So the x-intercept is (2,0)(-2, 0).

Next steps:

  • Plot the intercepts on the graph: one for each line.
  • Draw the lines through these points to find the solution, which is the intersection of the two lines.

If you have questions about plotting or want me to explain any other part of the process, feel free to ask!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing Systems of Equations
Intercepts

Formulas

x + y = -4
x - y = -2

Theorems

Intersection of lines theorem (solution of a system of linear equations)

Suitable Grade Level

Grades 8-10