ALGEBRA I Review

• Function

• Not a Function

Is this mapping a function or not a function? 

• Function

• Not a Function

Is the relation a function? Why.

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

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

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

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

Is this graph a function or not a function? 

• Function

• Not a Function

• 27

• 21

• 24

• 72

Which equation is being represented by this line?

• y = -1x + 2

• y = 1/2x + 2

• y = 3x -4

• y = -3x +2

Find the x and y intercepts
4x - 5y = 40

• x intercept is 10 
  y intercept is 8

• x intercept is 10
  y intercept is 20

• x intercept is 8
  y intercept is 10

• x intercept is 10
  y intercept is -8

Which equation best represents the line on the graph?

• y= 1/2x

• y= -1/2x

• y = 2x

• y = -2x

Which equation matches the graph? (Click me to see the image)

• y = 2x + 2

• y = 1/4x + 2

• y = 1x + 4

• y = 4x + 2

Find the slope of the line.

• 4/2

• -4/2

• 2

• -2