Lines, Functions, and Systems

In the equation, y = mx + b, the letter b is the​ (a)   and the letter m is the ​ (b)   .

• y-intercept
• slope
• x-intercept
• graph
• origin
• line

What is the graph's equation?

Identify the functions.

Which best describes a solution to a system of equations?

Which scale factor when multiplied with the TOP equation would help eliminate a variable?

3x - 6y = 20

9x + 5y = -11

• -3

• 9

• 5

• 2

How do you know when a system is ready for substitution?

• You just guess

• All the variables "line up"

Which graph is proportional?

• 
• 
• 

How do you know when a system is ready for elimination?

• There are opposite coefficients for the same variable

• All the variables "line up"

Match the following graphs to the number of solutions.

• One Solution

• 
• No Solution

• 
• Infinitely Many Solutions

•