Solve the System of Linear Equations Using Substitution

What is the main task described in the introduction of the video?

• To understand the concept of inequalities

• To solve a system of equations using drag-and-drop

• To learn about quadratic equations

• To graph a system of equations

Why is the substitution method chosen to solve the system of equations?

• Because it is the fastest method

• Because it requires no calculations

• Because the first equation is already solved for y

• Because it is the only method available

What is the first step in solving for x using the substitution method?

• Substitute the expression for y into the second equation

• Multiply both sides by 2

• Graph the equations

• Add the equations together

After finding x = 3, what is the next step to find the y-coordinate?

• Substitute x = 3 into the second equation

• Add 3 to both sides of the equation

• Substitute x = 3 into the first equation

• Multiply y by 3

What is the final solution to the system of equations?

• (1, 4)

• (3, 2)

• (2, 3)

• (4, 1)