Functions Assessment

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

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

If someone makes $2/hour what function rule would describe their earnings ? (x is the hours worked and y represents money earned)

• {2,4,6,8,10,12}

• x=2

• y=2x

• y=x+2

Which function has the steepest slope? (think back to our wage activity)

• y=2x

• y=15x

• y=30x

• y=25x + 2

What error did the student make when plotting the point (3, 4) according to the picture?

• The student moved left along the x-axis when he should have moved right

• The student plotted the y-coordinate in place of the x-coordinate

• The student didn't make a mistake

• Both Options 1 and 2

Find the slope of the line.

• -5/4

• 5/4

• -4/5

• 4/5

Which of the following equations represents the graphed line?

What is the y-intercept?

• 2

• 3

• 4

• -2

What is the equation of this line?

• y = 2x +2

• y = 2x -2

• y = -x + 2

• Cannot be Determined

Find the slope.

• 3/2

• -3/2

• (-0,-3)

• none of the above