Math Problem Statement

Find the x- and y-intercepts of the equation below. Write your answers as ordered pairs: 8y - 9x = -12.

Solution

The problem is asking for the xx- and yy-intercepts of the equation:

8y9x=128y - 9x = -12

Steps to Solve:

  1. Find the xx-intercept:

    • Set y=0y = 0 and solve for xx: 8(0)9x=128(0) - 9x = -12 9x=12    x=129=43-9x = -12 \quad \implies \quad x = \frac{-12}{-9} = \frac{4}{3}
    • The xx-intercept is (43,0)\left( \frac{4}{3}, 0 \right).
  2. Find the yy-intercept:

    • Set x=0x = 0 and solve for yy: 8y9(0)=128y - 9(0) = -12 8y=12    y=128=328y = -12 \quad \implies \quad y = \frac{-12}{8} = -\frac{3}{2}
    • The yy-intercept is (0,32)\left( 0, -\frac{3}{2} \right).

Final Answer:

  • xx-intercept: (43,0)\left( \frac{4}{3}, 0 \right)
  • yy-intercept: (0,32)\left( 0, -\frac{3}{2} \right)

Would you like further details or a step-by-step breakdown?

Here are 5 related questions to explore:

  1. How do you graph an equation using intercepts?
  2. What does the slope of this line tell us about its steepness?
  3. How can you rewrite the equation in slope-intercept form?
  4. How do parallel and perpendicular lines relate to this equation?
  5. What are other methods to find intercepts for linear equations?

Tip: Always verify intercepts by substituting them back into the original equation.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Coordinate Geometry

Formulas

To find the x-intercept, set y = 0. To find the y-intercept, set x = 0.

Theorems

Linear intercepts

Suitable Grade Level

Grades 7-10