Sol Algebra

Assume y varies inversely with x. What is the equation that best represents the relationship?

• y = 12/x

• y = 1/2x

• y = 6x

• y = -20/x

Is this relation a function?

• Function

• Not a function

What is the x and y intercept for the following equation ?
4x - 10y = 20

• x - int = 4    
  y-int = -10

• x-int = 5
  y-int = 2

• x - int = 5
  y int = -2

• x -int = 4
  y -int = -10

From the equation y = 3x + 18,  what is the value of the x-intercept?

• -6

• 6

• 18

• 3

Mathematical Equivalence

ON

Solve for x:

• x = yb - v

• x = by - v

• x = by + v

Which is a zero of the graph?

• 0

• -1

• 1.5

• -3

How many zeros does this parabola have? 

• 3

• 2

• 0

• 1

Find the zero(s) of the function.

• x = {-3, 5}

• x = {3, 5}

• x = {-3, -5}

• x = {3, -5}

What type of variation is represented by the graph?

• direct

• inverse

• neither