Functions Review

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

Which of the following situations
corresponds to this graph? 

• A bicyclist accelerates from a stop, travels at a constant speed, then slows to a stop.

• A car accelerates from a stop,
  travels at a constant speed, slows,
  and then travels at a slower speed.

Is this graph a function or not a function? 

• Function 

• Not a Function 

Is this graph a function or not a function? 

• Function 

• Not a Function

Which table(s) represent linear functions?

• Table 1, only

• Tables 1 and 2, only

• Tables 1 and 3, only

• Tables 1, 2 and 3.

Which equation represents y as a linear function of x?

• y=8x

• x=5

• y=4x²

• y=x³

Which function is linear?

• y = 2x + 4

• y = 2x² + 4

• y = 2x(4 − 3x)

• xy = 15

How would you write the equation with a slope of 2/3 and a y-intercept of -3

• y=3/2x+3

• y=2/3-3

• y=2/3x-3

• y=2/3x+3

Find the slope of the line that passes through
(1, -19) and (-2, -7)

• -4

• 4

• 1/4

• -1/4

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5