Systems of Equations and Their Solutions

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

Which equation completes a system of equations with infinitely many solutions?

  • 3x - 2y = -1
  • 9x - 6y = -6 (correct)
  • 2x - 3y = 1
  • 6x - 9y = -9 (correct)

What coordinate pair is one of the points on the line graphed on the coordinate plane?

  • (-2, 2)
  • (0, 3) (correct)
  • (2, 0)
  • (-2, -2)

Which equation represents a line that would not result in the same slope as the given graph?

  • 9x - 6y = -6
  • 6x - 9y = -9
  • 4x - 5y = 7 (correct)
  • 2x - 3y = 1

What is a potential solution to a system of equations where one of the equations is 2x - 3y = 1?

<p>(2, 0) (D)</p> Signup and view all the answers

Which of the following pairs shows two points that lie on the same line represented by 2x - 3y = 1?

<p>(0, 3) and (1, 1) (B)</p> Signup and view all the answers

What is the slope of the first equation, $x - 2y = 8$, when rewritten in slope-intercept form?

<p>-2 (D)</p> Signup and view all the answers

Which option accurately represents neither puppy's weight after x weeks equating Semira's and Cedric's puppies?

<p>$y = 0.8x + 12.4$ and $y = 1.2x + 9.2$ (B)</p> Signup and view all the answers

Which of the following statements about the system of equations is true?

<p>The equations intersect at one point. (B)</p> Signup and view all the answers

What is the solution to the equations, $5x + 3y = 18$ and $2x - 3y = 10$?

<p>(2, 1.5) (D)</p> Signup and view all the answers

After how many weeks will Cedric's puppy weigh less than Semira's puppy?

<p>After 5 weeks (A)</p> Signup and view all the answers

What is the approximate solution to the system of equations shown in the graph?

<p>(-2, 2) (B)</p> Signup and view all the answers

What coordinates represent the intersection of the two lines in the graph?

<p>(-2, 2) (D)</p> Signup and view all the answers

Which point does the line passing through (-4, -2) and (2, 2) NOT contain?

<p>(0, 0) (C)</p> Signup and view all the answers

Which of the following equations represents the line that passes through points (-4, -2) and (2, 2)?

<p>y = x + 2 (D)</p> Signup and view all the answers

What characteristic does the line shown in the graph have?

<p>It has a positive slope. (D)</p> Signup and view all the answers

What is the correct solution to the system of equations: 5x + 3y = 18 and 2x - 3y = 10?

<p>(1, 5/2) (A)</p> Signup and view all the answers

Which system of equations should Semira and Cedric use to find when their puppies will weigh the same?

<p>y = 0.8x + 12.4; y = 1.2x + 9.2 (C)</p> Signup and view all the answers

How much does Semira's puppy weigh after 5 weeks?

<p>16.4 pounds (B)</p> Signup and view all the answers

If Cedric's puppy grows at 1.2 pounds per week, what will its weight be after 4 weeks?

<p>13.2 pounds (A)</p> Signup and view all the answers

What is the weight difference between Semira's and Cedric's puppies once they weigh the same?

<p>3.2 pounds (A)</p> Signup and view all the answers

What is the correct system of equations to determine after how many weeks Semira's and Cedric's puppies will weigh the same?

<p>$egin{cases} y = 0.8x + 12.4 \ y = 1.2x + 9.2 ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } \ ext{ } ext{ } \ ext{ } ext{ } \ ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } \ ext{ } ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } ext{ } ext{ } ext{ } ext{ } ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } ext{ }\ ext{ } \ ext{ } ext{ }\ ext{ } \ ext{ } ext{ } || ext{ } \ ext{ } ext{ }|| ext{ } \ ext{ } ext{ } ext{ } ext{ } ext{ }\ ext{ } ext{ } ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } ext{ } ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ }\ ext{ } \ ext{ }\ ext{ }\ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ ext{ } \ \ ext{ } ext{ }\ \ ext{ } || ext{ } \ ext{ } \ ext{ } |\ ext{ } \ ext{ } ext{ } ext{ }\ ext{ }|| ext{ } ext{ }\ ext{ } \ ext{ } \ \ ext{ }\ \\ ext{ } ext{ } \ ext{ } ext{ }|| \ ext{ }}$ (D)</p> Signup and view all the answers

Which statement regarding the given system of equations is true?

<p>The equations have opposite y-intercepts. (D)</p> Signup and view all the answers

What represents the initial weight of Semira's puppy?

<p>12.4 pounds (B)</p> Signup and view all the answers

What is the weekly growth rate of Cedric's puppy?

<p>1.2 pounds (A)</p> Signup and view all the answers

If $x$ represents time in weeks, what is the weight of Semira's puppy after 5 weeks?

<p>18.4 pounds (D)</p> Signup and view all the answers

Flashcards

Point of Intersection

The point where two lines cross on a graph.

Coordinates

A pair of numbers that show the location of a point on a graph.

Line

A straight line drawn on a graph.

Equation of a Line

The equation that represents the relationship between the variables of a line.

Signup and view all the flashcards

What does it mean for a system of equations to have infinitely many solutions?

A system of equations has infinitely many solutions if the two equations represent the same line. This means that the equations are equivalent, or one is a multiple of the other.

Signup and view all the flashcards

How can you check if an equation represents the same line as the graphed line?

To determine if an equation represents the same line as the given graph, check if the equation is equivalent to the slope-intercept form of the line in the graph. This means you need to solve the equation for y.

Signup and view all the flashcards

What is a coordinate pair?

A coordinate pair represents a point on a graph. The first number in the pair represents the x-coordinate (horizontal position) and the second number represents the y-coordinate (vertical position).

Signup and view all the flashcards

How can you find the coordinate pair where the line crosses the y-axis?

The graph shows a line passing through the points (0, 3) and (2, 0). To find the coordinate pair for the point where the line crosses the y-axis, look for the y-coordinate when x is 0.

Signup and view all the flashcards

What is the coordinate pair where the line crosses the y-axis?

The coordinate pair where the line crosses the y-axis is the point where the x-coordinate is 0. In this case, the y-coordinate is 3. Therefore, the correct coordinate pair is (0, 3).

Signup and view all the flashcards

System of Equations

A set of two or more equations that share the same variables and need to be solved simultaneously.

Signup and view all the flashcards

Solution to a System of Equations

The point where two lines intersect, representing a solution that satisfies both equations in the system.

Signup and view all the flashcards

Y-intercept

The initial value of y when x is zero, represented as the point where the line intercepts the y-axis on a graph.

Signup and view all the flashcards

Parallel Lines in a System of Equations

The equations have the same slope, meaning they are parallel and will never intersect. This means there is no point where the x and y values satisfy both equations, resulting in no solution.

Signup and view all the flashcards

Opposite Y-Intercepts in a System of Equations

The y-intercept is where the line crosses the y-axis. If the equations have opposite y-intercepts, it means they will intersect at some point, leading to one solution.

Signup and view all the flashcards

What does it mean for a system of equations to have a solution?

A system of equations has a solution when the lines represented by the equations intersect at a single point. This point represents the coordinate values that satisfy both equations.

Signup and view all the flashcards

How do you solve a system of equations?

To solve a system of equations, you need to find the values of the variables that satisfy both equations simultaneously. This can be done using methods like substitution or elimination.

Signup and view all the flashcards

How are systems of equations represented on a graph?

In a system of equations, each equation represents a line. The solution to the system is the point where these lines intersect. This point represents the coordinate values that satisfy both equations.

Signup and view all the flashcards

What is the solution to a system of equations?

The solution to a system of equations is a pair of values - one for each unknown variable - that make both equations true.

Signup and view all the flashcards

How many solutions can a system of equations have?

Different systems of equations can have different numbers of solutions. A system can have no solutions, one solution, or infinitely many solutions.

Signup and view all the flashcards

More Like This

Linear Equations and Systems Quiz
9 questions

Linear Equations and Systems Quiz

PraiseworthyClearQuartz avatar
PraiseworthyClearQuartz
Linear Equations in Two Variables
12 questions
Algebra Class: Systems of Equations Quiz
5 questions
Use Quizgecko on...
Browser
Browser