Linear Functions

What is the definition of a function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

When you have a vertical line, you have a slope that's _______

• Zero 
• Undefined 
• One
• Ten

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D:{-4, 0, 1, 2}
  R:{-4, -3, 1}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

What equation does the table represent?

• y=x+1
• y=x-1
• y=2x+1
• y=2x-1

Which equation matches the table?

• y=2x
• y=x-3
• y=x+2
• y=1/2x

Does this mapping diagram represent a function?

• No, because there are repeating input values
• Yes, because there are no repeating input values

Is this set of ordered pairs a function or not a function? 

• Function
• Not a Function 

Find the value of y when x = 2.

• 2
• 6
• 7
• 8

Find the slope

• -5/3
• -3/5
• 5/3
• 3/5

What is the y-intercept for the given graph?

• (0,-5)

• (0,5)

• (0,1)

• (0,-1)