EmSAT Achieve Exam > EmSAT Achieve Videos > Mathematics for EmSAT Achieve > Linear Equations in Two Variables
Linear Equations in Two Variables Video Lecture | Mathematics for EmSAT Achieve
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FAQs on Linear Equations in Two Variables Video Lecture - Mathematics for EmSAT Achieve
| 1. What are linear equations in two variables? |  |
Ans. Linear equations in two variables are algebraic equations that involve two variables, usually represented as x and y, with exponents of 1. These equations can be written in the form ax + by = c, where a, b, and c are constants.
| 2. How do you graph a linear equation in two variables? | |
Ans. To graph a linear equation in two variables, we can use the slope-intercept form, which is y = mx + b. Here, m represents the slope of the line and b represents the y-intercept. We can plot the y-intercept on the graph and then use the slope to find other points on the line. Finally, we connect these points to graph the line.
| 3. What is the solution to a system of linear equations in two variables? | |
Ans. The solution to a system of linear equations in two variables is the point or points that satisfy all the equations in the system simultaneously. If the system has a unique solution, it means the two lines intersect at a single point. If the system has infinitely many solutions, it means the two lines are coincident or overlapping. If the system has no solution, it means the two lines are parallel and do not intersect.
| 4. How can we solve a system of linear equations in two variables algebraically? | |
Ans. To solve a system of linear equations algebraically, we can use methods such as substitution or elimination. In the substitution method, we solve one equation for one variable and substitute it into the other equation. This helps us find the value of one variable, which can then be substituted back to find the value of the other variable. In the elimination method, we manipulate the equations to eliminate one variable and solve for the other.
| 5. What is the importance of linear equations in two variables in real-life applications? | |
Ans. Linear equations in two variables have numerous real-life applications. They can be used to model and solve problems related to cost and revenue analysis, distance and speed calculations, mixtures and solutions, and more. For example, they can help in determining the optimal production level for a company, finding the break-even point, or solving problems related to motion and time. These equations provide a mathematical framework to analyze and solve real-world problems efficiently.
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Nov 22, 2024 Last updated |
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