Math Problem Statement

what about (2,-33)? is it a solution?

Solution

Let's check if (2,33)(2, -33) is a solution to the equation y=7x3y = -7x - 3.

Substitute x=2x = 2 into the equation:

y=7(2)3y = -7(2) - 3

Simplify the expression:

y=143=17y = -14 - 3 = -17

The equation gives y=17y = -17 when x=2x = 2. However, the point (2,33)(2, -33) has y=33y = -33. Since 1733-17 \neq -33, (2,33)(2, -33) is not a solution to the equation y=7x3y = -7x - 3.

Would you like more details or have any other questions?

Here are 5 related questions:

  1. What are the common mistakes when substituting values into an equation?
  2. How can you verify if a solution is correct for any linear equation?
  3. How do you find the y-value given an x-value in a linear equation?
  4. What does it mean graphically if a point is not a solution to an equation?
  5. How do different values of xx affect the y-value in a linear equation?

Tip: After substituting the value of xx, always simplify the equation step by step to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Linear equations
Substitution method

Formulas

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Theorems

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Suitable Grade Level

Grades 7-9