Math Problem Statement

In the given system of equations, t is a constant. If the system has no solution, what is the value of t?

Solution

The system of equations provided in the image is:

4x - 6y = 10y + 2 \tag{1} ty = \frac{1}{2} + 2x \tag{2}

We are asked to find the value of tt such that the system has no solution. Let's proceed step by step:

Step 1: Simplify the first equation

Starting with equation (1):

4x6y=10y+24x - 6y = 10y + 2

Rearrange to get all terms involving yy on one side:

4x=16y+24x = 16y + 2

Now, solve for xx:

x=4y+12x = 4y + \frac{1}{2}

Step 2: Substitute into the second equation

From equation (2):

ty=12+2xty = \frac{1}{2} + 2x

Substitute x=4y+12x = 4y + \frac{1}{2} into this equation:

ty=12+2(4y+12)ty = \frac{1}{2} + 2 \left( 4y + \frac{1}{2} \right)

Simplify:

ty=12+8y+1ty = \frac{1}{2} + 8y + 1 ty=8y+32ty = 8y + \frac{3}{2}

Step 3: Analyze conditions for no solution

For the system to have no solution, the lines represented by these equations must be parallel, which means that the coefficients of yy in both equations must be equal. From the first equation, we already know that:

x=4y+12x = 4y + \frac{1}{2}

So, the coefficient of yy in equation (2) must also match the coefficient of yy in the equation we derived. Therefore, we equate the coefficients of yy:

t=8t = 8

Thus, the value of tt that causes the system to have no solution is 8\boxed{8}.

Would you like further details on any of these steps or have additional questions?

Here are five related questions you might explore:

  1. How do we verify that two lines are parallel in general?
  2. What happens when t8t \neq 8? Does the system have one or infinitely many solutions?
  3. How would the problem change if tt was a function instead of a constant?
  4. Can this method be extended to systems with three variables?
  5. What conditions are needed for two lines to be perpendicular instead of parallel?

Tip: When dealing with systems of equations, always look at the relationship between the slopes of the lines to determine whether they are parallel, intersecting, or identical (coincident).

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Math Problem Analysis

Mathematical Concepts

Linear Systems
Algebra
Parallel Lines

Formulas

Equation of a straight line: ax + by = c
Substitution method in systems of equations

Theorems

Condition for parallel lines: The lines are parallel if the slopes (coefficients of x and y) are equal and the y-intercepts differ

Suitable Grade Level

Grades 10-12