10/15 Warm Up

Is this mapping a function or not a function? 

• Function

• Not a Function 

Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}

• Yes

• No

Is this table a function or not a function? 

• Function

• Not a Function

Is this a function? Explain.

• Yes; it passes the horizontal line test.

• No; it is not a straight line.

• Yes; it passes the vertical line test.

• No; there is a line connecting the dots.

For the function f(x) = -3x + 3 find f(0).

• 0

• -3

• 3

• -1

Evaluate f(-2) if f(x) = x²+ 3.

• -1

• 1

• 7

• -7

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)

If f(x) = 2x+1, what would the function look like once you substitute in a 1 to find f(1)?

• f(x) = 21+1

• f(1) = 2 (1) + 1

• f(1) = 2x (1) + 1