Graphing Unit Test

Does the mapping represent a function? Explain.

• Yes, each x-value goes to only one value

• No, one y-value is negative

• Yes, all x-values are positive

• No, 2 has two y-values

Tags

CCSS.8.F.A.1

Does the graph represent a function? Explain.

• Yes, the graph does not overlap itself

• No, the graph does overlap itself

• Yes, the slope is negative

• Yes, does not cross the y-axis

Find the domain and range of the function.

(2, 5) (4, 3) (7, 1) (6, 8)

• Domain: {0, 2, 5, 7}      Range: {4, 3, 2, 1}

• Domain: {2, 4, 6, 7}      Range: {1, 3, 5, 8}

• Domain: {5, 3, 1, 2}      Range: {2, 4, 6, 8}

• Domain: {1, 5, 3, 7}      Range: {4, 3, 2, 1}

Given f(x) = 4x - 7, find f(6).

• 10

• 6

• 14

• 17

Tags

CCSS.HSF.IF.A.2

Find the slope of the line that passes through these two points: (3,-8) (7, 8)

• m = 3

• m = 2

• m = 4

• m = 3

Tags

CCSS.8.EE.B.5

What is the slope of the line that passes through the points on the table?

• m = -3

• m = -2

• m = -4

• m = -6

Tags

CCSS.8.EE.B.5

Write the equation of the line in slope-intercept form.

• y = -¼ x + 3

• y = ⅓ x + 2

• y = ¼ x + 4

• y = ⅓ x + 6

Write an equation in point-slope form of the line that passes through the point

(4, -8) and has a slope of m= -6.

• y + 8 = -6(x - 4)

• y + 8 = 7(x+6)

• y - 8 = 6(x + 4)

• y + 6 = -6(x-7)

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