Math Problem Statement

Find the x-intercept of the line 9x–3y=24.

Solution

To find the x-intercept of the line, we set y=0y = 0 in the equation 9x3y=249x - 3y = 24, since the x-intercept is where the line crosses the x-axis (where y=0y = 0).

Starting with the equation:

9x3y=249x - 3y = 24

Substitute y=0y = 0:

9x3(0)=249x - 3(0) = 24

9x=249x = 24

Now, solve for xx:

x=249=83x = \frac{24}{9} = \frac{8}{3}

Thus, the x-intercept is (83,0)\left( \frac{8}{3}, 0 \right).

Would you like a deeper explanation of how this process works, or any other details?

Here are 5 related questions for further practice:

  1. Find the y-intercept of the line 9x3y=249x - 3y = 24.
  2. What is the slope of the line 9x3y=249x - 3y = 24?
  3. Write the equation of the line 9x3y=249x - 3y = 24 in slope-intercept form.
  4. Find the x-intercept of the line 7x+2y=147x + 2y = 14.
  5. Determine the intercepts of the line 5x4y=205x - 4y = 20.

Tip: The x-intercept occurs when y=0y = 0, and the y-intercept occurs when x=0x = 0.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Intercepts

Formulas

x-intercept: set y = 0 in the equation of a line

Theorems

Intercept theorem
Basic principles of solving linear equations

Suitable Grade Level

Grades 8-10