Math Problem Statement

When a student sets y=0 into a linear equation, she can solve for x and gets x=-3. When she sets x=0 and solves the equation, she gets y=4. Which of the following is the correct statement of the intercepts and graph?

x-intercept: (-3,0)

y-intercept: (0,4)

x-intercept: (-3,0)

y-intercept: (0,4) 

x-intercept: (0,-3)

y-intercept: (4,0) 

x-intercept: (-3,0)

y-intercept: (4,0)

Solution

The correct statement of the intercepts is:

  • x-intercept: (3,0)(-3,0)
  • y-intercept: (0,4)(0,4)

This matches the first option in the list:

  • x-intercept: (3,0)(-3,0)
  • y-intercept: (0,4)(0,4)

This means that when y=0y = 0, the point on the x-axis is (3,0)(-3, 0), and when x=0x = 0, the point on the y-axis is (0,4)(0, 4).

Would you like more details or have any questions?

Here are 5 related questions to explore this further:

  1. How do you derive the equation of a line using the intercepts?
  2. What is the slope of the line passing through the points (3,0)(-3, 0) and (0,4)(0, 4)?
  3. How do x- and y-intercepts help in graphing linear equations?
  4. Can a linear equation have more than one x- or y-intercept?
  5. How do the intercepts change if you multiply the entire equation by a constant?

Tip: You can use the intercepts to quickly sketch the line, as they tell you where the line crosses the axes!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Coordinate Geometry

Formulas

Intercept form of linear equations
Point form for x- and y-intercepts

Theorems

Intercepts in Cartesian Plane

Suitable Grade Level

Grades 8-10