Math Problem Statement

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

Solution

The problem you've uploaded presents a system of equations:

  1. 48x72y=30y+2448x - 72y = 30y + 24
  2. ry=1616xry = \frac{1}{6} - 16x

You are asked to find the value of rr if the system has no solution.

Step 1: Simplify the first equation

We start by simplifying the first equation:

48x72y=30y+2448x - 72y = 30y + 24

Move all terms involving yy to one side:

48x72y30y=2448x - 72y - 30y = 24

48x102y=2448x - 102y = 24

This is the simplified form of the first equation.

Step 2: Rearrange the second equation

The second equation is:

ry=1616xry = \frac{1}{6} - 16x

We can leave this equation as is for now.

Step 3: Analyze the conditions for no solution

For the system to have no solution, the two lines represented by these equations must be parallel. Parallel lines have the same slope but different intercepts. Therefore, we need to express both equations in slope-intercept form (i.e., y=mx+by = mx + b) and compare their slopes.

First equation in slope-intercept form:

48x102y=2448x - 102y = 24

Solving for yy:

102y=48x+24-102y = -48x + 24 y=48102x24102y = \frac{48}{102}x - \frac{24}{102} y=2451x1251y = \frac{24}{51}x - \frac{12}{51}

The slope of the first equation is 2451\frac{24}{51}.

Second equation in slope-intercept form:

From the second equation, we solve for yy:

ry=1616xry = \frac{1}{6} - 16x y=1616xry = \frac{\frac{1}{6} - 16x}{r} y=16r16xry = \frac{1}{6r} - \frac{16x}{r}

The slope of this equation is 16r-\frac{16}{r}.

Step 4: Set slopes equal for parallel lines

For the system to have no solution, the slopes must be equal:

2451=16r\frac{24}{51} = -\frac{16}{r}

Now, solve for rr:

r=16×5124r = -\frac{16 \times 51}{24} r=81624r = -\frac{816}{24} r=34r = -34

Thus, the value of rr is 34\boxed{-34}.

Would you like further details or have any questions?


Here are 5 related questions to deepen your understanding:

  1. How do you determine when two lines are parallel?
  2. What would happen if the system had exactly one solution?
  3. Can the value of rr change if different methods are used to solve the system?
  4. How do you interpret the meaning of a system of equations having no solution geometrically?
  5. What would the solution be if the system had an infinite number of solutions?

Tip: When solving systems of equations, always check for special cases such as parallel lines or identical lines to determine if the system has no solution or infinite solutions.

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Math Problem Analysis

Mathematical Concepts

Algebra
System of Equations
Slope-Intercept Form
Parallel Lines

Formulas

Slope-Intercept Form: y = mx + b
Equation for Parallel Lines: Slopes must be equal

Theorems

Condition for No Solution: Parallel Lines Theorem

Suitable Grade Level

Grades 10-12