Math 1111 Review for Test #1 Sections 1.2 – 2.1. Function or Not a Function? {(4, -5), (3, 4),...

Math 1111 Review for Test #1

Sections 1.2 – 2.1

Function or Not a Function?{(4, -5), (3, 4), (-2, 5)}

•A. Function

•B. Not a Function

Function or Not a Function?{(4, 7), (-3, 7), (2, 7)}

•A. Function

•B. Not a Function

Function or Not a Function?{(5, 7), (4, -1), (5, -1)}

•A. Function

•B. Not a Function

Is 5x + 6y = -9 the equation of a function?

•A. Yes, it is a function.

•B. No, it is not a function.

Is x = 4 the equation of a function?

•A. Yes, it is a function.

•B. No, it is not a function.

What is the slope of the line 5x – 3y = 8?

• A. -5/3

• B. 5/3

• C. 3/5

• D. -3/5

What is the slope of the line y = 6?

• A. Undefined

• B. 6

• C. 3/4

• D. 0

What is the slope of the line x = -4?

• A. -4

• B. 0

• C. Undefined

• D. 6

What is the slope of the line passing through (-3, 7) and (-6, -2)?

• A. 3

• B. -3

• C. 1/3

• D. -1/3

Find the slope-intercept equation of the line with slope -3 and passing through (4, -2).

• A. Y = -3x - 2

• B. Y = -3x + 14

• C. Y = -3x - 10

• D. Y = -3x + 10

What is the equation of the horizontal line passing through (6, -4)?

•A. X = 6

•B. Y = -4

•C. Impossible to determine.

Is f(x) = -4x + 2 increasing, decreasing or constant?

•A. Increasing

•B. Decreasing

•C. Constant

Refer to the graph and find f(1)

• A. 2

• B. 0

• C. 1

• D. -1

-4 -3 -2 -1 1 2 3 4

-4

-3

-2

-1

1

2

3

4

x

y

What is the domain of the function whose graph is shown below?

• A. (-1, 2)

• B. [-1, 2)

• C. [1, 4)

• D. (1, 4)

-4 -3 -2 -1 1 2 3 4

-4

-3

-2

-1

1

2

3

4

x

y

What is the range of the function whose graph is shown below?

• A. (-1, 2)

• B. [-1, 2)

• C. [1, 4)

• D. (1, 4]

-4 -3 -2 -1 1 2 3 4

-4

-3

-2

-1

1

2

3

4

x

y

Find f(-3) if f(x) = -x2 + 5

• A. 14

• B. -4

• C. 2

• D. 8

What is the zero for f(x) = -8x + 1?

• A. 1

• B. -8

• C. -1/8

• D. 1/8

Solve for x: 7x + 2 = -3x - 8

• A. X = -1

• B. No Solution

• C. -5/2

• D. -3/2

Solve for x: 2(9x + 2) – 4 = 3(6x – 1)

• A. X = -1

• B. No Solution

• C. -5/2

• D. -3/2

Solve for x: -6(2x + 3) – 4 = -8 – 2(x – 5) – 3(x + 1)

• A. X = 3

• B. X = -3

• C. X = 69

• D. None of the above

Find the function:

• You have 400 feet of fencing to enclose a rectangular lot and divide it in two by another fence that is parallel to one side of the lot. Express the area of the rectangular lot, A(x), as a function of the length of the fence that divides the rectangular lot, x. Leave in factored form.