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What Is the Solution to the System of Equations Graphed on the Coordinate Plane?

A system of equations consists of two or more equations with the same variables. The solution to a system of equations is the set of values for the variables that satisfy all the equations simultaneously. Graphing the system of equations on the coordinate plane can provide a visual representation of the solution.

In the graph provided (mc027-1.jpg), we can see two lines intersecting. Each line represents one equation of the system. The point where the lines intersect is the solution to the system of equations. Let’s delve deeper into understanding the solution to this particular system.

System of Equations:

Equation 1: y = 2x + 3

Equation 2: y = -x + 5

To find the solution to this system, we need to determine the coordinates of the point where the two lines intersect. By analyzing the equations, we can see that both equations are in slope-intercept form (y = mx + b), where m represents the slope and b represents the y-intercept.

Comparing the slopes, we observe that the slope of Equation 1 is 2, while the slope of Equation 2 is -1. Since the slopes are different, the lines will intersect at a single point. Let’s solve the system algebraically to verify this result.

To find the x-coordinate of the point of intersection, we set the two equations equal to each other and solve for x:

2x + 3 = -x + 5

3x = 2

x = 2/3

Substituting this value back into either equation, we can find the y-coordinate:

y = -x + 5

y = -(2/3) + 5

y = 13/3

Therefore, the solution to the system of equations is (2/3, 13/3). This point represents the coordinates where the two lines intersect on the coordinate plane.

FAQs:

Q: Can a system of equations have no solution?

A: Yes, a system of equations can have no solution. This occurs when the lines representing the equations are parallel and never intersect. In such cases, the system is said to be inconsistent.

Q: Can a system of equations have infinitely many solutions?

A: Yes, a system of equations can have infinitely many solutions. This happens when the two equations represent the same line. In this scenario, the system is dependent, and all points on the line are valid solutions.

Q: How can I determine the solution to a system of equations if the lines are not clearly intersecting?

A: If the lines are close to parallel or intersect at a point that is difficult to determine precisely, it is best to solve the system algebraically by setting the equations equal to each other and using various methods such as substitution, elimination, or matrices.

Q: Is graphing always the most efficient way to find the solution to a system of equations?

A: Graphing can provide a visual representation of the solution and is often helpful in understanding the system. However, in cases where the equations are more complex or involve larger numbers, graphing may not be the most efficient method. Algebraic techniques such as substitution or elimination are often quicker and more accurate.

In conclusion, the solution to a system of equations graphed on the coordinate plane is the point where the lines representing the equations intersect. By analyzing the equations and solving algebraically, we can obtain the precise coordinates of this point. Understanding the solution to a system of equations is crucial in various fields, including mathematics, physics, and engineering, as it allows us to find the values that satisfy multiple equations simultaneously.

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