Math Problem Statement

Given the equation y = -x - 4, find the x and y intercepts.

Solution

The equation given in the image is y=x4y = -x - 4. Let's find the intercepts.

1. Finding the x-intercept:

The x-intercept occurs when y=0y = 0. So, set y=0y = 0 in the equation and solve for xx: 0=x40 = -x - 4 x=4x = -4 Thus, the x-intercept is (4,0)(-4, 0).

2. Finding the y-intercept:

The y-intercept occurs when x=0x = 0. So, set x=0x = 0 in the equation: y=04y = -0 - 4 y=4y = -4 Thus, the y-intercept is (0,4)(0, -4).

So the answers are:

  • x-intercept: (4,0)(-4, 0)
  • y-intercept: (0,4)(0, -4)

Would you like further details or have any questions? Here are some related practice problems:

  1. How do you find intercepts for a more complex linear equation, like y=2x+3y = 2x + 3?
  2. What is the slope of the line represented by y=x4y = -x - 4?
  3. How do you graph a line using its intercepts?
  4. What happens to the intercepts if the equation is y=0.5x2y = 0.5x - 2?
  5. How would the intercepts change if you had an equation like y=x+2y = -x + 2?

Tip: Always set the other variable to zero when finding intercepts!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

y = mx + b
x-intercept: set y = 0
y-intercept: set x = 0

Theorems

Intercept Theorem: x-intercept is where y = 0, y-intercept is where x = 0

Suitable Grade Level

Grades 7-10