Review: Functions; Systems and Solving Equations

If a system of linear equations has one solution, what does this mean about the two lines? 

• Parallel lines
• the same line 
• Intersecting lines

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

The solution to a system of equations is any ordered pair that makes both equations true. 

• TRUE
• FALSE

If b=6 and m=3, what is the correct slope intercept equation? (a)  

• y=3x+6
• none
• y=3x-6
• y=6x+3

Graph the line y=-3x+4.

What is the slope-intercept equation for this line 

(y = mx + b)?

• y= 2x - 6

• y = 6x + 2

• y= -6x + 2

Is this table a function or not a function? 

• Function
• Not a Function

Is the relation a function? Explain.

• Yes, the x-value 11 has two y-values paired with it.

• Yes, each x-value has only one y-value paired with it.

• No, the x-value 11 has two y-values paired with it.

• No, each x-value has only one y-value paired with it.

Does the table represent a function?

• Yes

• No

In order to be a function the following must be true.

• each x value has only one y value
• each y value has only one x value
• each x  has only one y & each y has only one x 
• each x and y are equal