8 Math Chapter 6 Test Review

What is the definition of function?

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

Which relation is NOT a function?

• {(1,-5), (3,1), (-5,4), (4,-2)}
• {(2,7), (3,7), (4,7), (5,8)}
• {(1,-5), (-1,6), (1,5), (6,-3)}
• {(3,-2), (5,-6), (7,7), (8,8)}

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

Given that y = x+3

Find the value of y when x = - 2

• -1

• 1

• 5

• -5

Which equation is being represented by this line?

• y = -1x + 2
• y = 1/2x + 2
• y = 3x -4
• y = -3x +2

Write the equation for the line in slope-intercept form

•  y=-1x+3
• y=4x+3
• y=¼x+3
• y=-4x+3

Write the equation in y=mx+b form.

• $y=2x+2$

• $y=2x+4$

• $y=4x+2$

• $y=4x+4$

Write the equation in y=mx+b form.

• $y=3x+7$

• $y=2x+3$

• $y=2x+7$

• $y=7x+3$

Write the equation in y=mx+b form.

• $y=4x+2$

• $y=-4x+2$

• $y=-3x+14$

• $y=3x+14$