What does
"solution to a system of equations"
mean?

• It's the point where both equations equal zero
• It's the point where graphs of both equations cross the y-axis
• It's the point that solves both equations at the same time
• It's the point where graphs of both equations cross the x-axis

Is the ordered pair (-3, -7) a solution to the following system? 
y = 4x + 5
y = x – 4

• YES
• NO
• All ordered pairs are solutions to this system
• This system has NO Solutions

What is the first step in solving a system by graphing?

• Write both linear equations in slope-intercept form

• Get x by itself

• Compare the slopes of both equations

• Write both equations in standard form

Solve the following system by graphing. What is the solution?

• Infinite number of solutions

• (3, 3)

• (3, -3)

• (-3, 3)

What is the solution?

• No solution
• (0, 2)
• (0, -4)
• (3, -3)

What is the solution to this system?

• One Solution
• No solution
• Infinitely Many Solutions

^{What is the solution to the system?} 

• (1,1)
• -2
• (1, 2)
• (1, -1)

Solve by graphing.
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

Solve this system of equations by graphing. 
y = 1/2x + 2
y = -3x + 9

• (2,3)
• (-2,-3)
• (3, 2)
• (-3,2)

What is the best method do you use?

y = 6x − 11

−2x − 3y = −7

• Graphing

• Substitution because a variable is defined

• Elimination because both equations are in standard form.