Solving Systems of Equations by Graphing

What does the x-axis represent in the camera sales example?

• The number of cameras sold

• The years since 2000

• The price of cameras

• The popularity of digital cameras

In the substitution method, what do you do after substituting the values of x and y?

• Multiply the equations

• Add the equations together

• Check if the equations are equal

• Divide the equations

Why is the graphical method not ideal for solving systems of equations?

• It is too complicated

• It requires a lot of time

• It cannot be used for all types of equations

• It only provides an estimate

What is the first step in solving a system of equations graphically?

• Convert the equations to standard form

• Graph each equation on the same coordinate plane

• Verify the solution using substitution

• Estimate the intersection point

In the trivia game example, how is the score calculated?

• By subtracting the number of incorrect answers from twice the number of correct answers

• By dividing the number of correct answers by the number of incorrect answers

• By adding the number of correct answers to the number of incorrect answers

• By multiplying the number of correct answers by the number of incorrect answers

How many questions did the player answer correctly in the trivia game example?

• 10

• 20

• 30

• 40

What are the three possibilities for the solution set of a linear system in two variables?

• Intersect in multiple points, perpendicular lines, same line

• Intersect in a single point, parallel lines, same line

• Intersect in multiple points, parallel lines, same line

• Intersect in a single point, perpendicular lines, same line

What does it mean if two lines in a system of equations are parallel?

• There is one solution

• There is no solution

• There are infinitely many solutions

• The lines intersect at multiple points

What is the solution to a system of equations if the two lines are the same?

• No solution

• Two solutions

• Infinitely many solutions

• One solution

What is the slope of the line represented by the equation y = -1/3x + 2?

• -2

• 2

• -1/3

• 1/3