Test 3-1 Module 2 Topic 1 REVIEW

The value of y varies directly with x and if x = 104 then y = 78. What is the value of x when y = 39?

• A. 29.25

• D. 58

• B. 52

• C. 69.333...

A graphed line contains the points given on the table.

Determine the rate of change. Express your answer as a decimal.

A graphed line contains the points given on the table.

Which function represents the relationship?

• m(x)=-10.2x+2.2

• m(x)=2.5x-5.5

• m(x)=-x-9

• m(x)=x-2.2

A graphed line contains the points given on the table. Write a function and name it m(x).

Determine m(18)

Mathematical Equivalence

ON

The daily cost of hiring a plumber, y, to work x hours on a repair project can be modeled using a linear function. The plumber charges a fixed cost of $80 plus an additional cost of $45 per hour. The plumber works a maximum of 8 hours per day.

For one day of work, what is the range of the function for this situation?

• D. 45 ≤ y ≤ 685

• A. 80 ≤ y ≤ 440

• B. 0 ≤ y ≤ 8

• C. 0 ≤ x ≤ 10

Find the slope of the line represented by 27x + 9y = 36.

• 3

• 2

• -2

• -3

Dianne graphed 𝑓(𝑥)=𝑥 and ℎ(𝑥)=𝑓(𝑥+3) on the same coordinate grid.

Which statement describes a true statement.

• ℎ(𝑥) is translated 3 units up from 𝑓(𝑥).

• ℎ(𝑥) is translated 3 units down from 𝑓(𝑥).

• ℎ(𝑥) is translated 3 units right from 𝑓(𝑥).

• ℎ(𝑥) is translated 3 units left from 𝑓(𝑥).

Use a point-slope form to write an equation with the given information.

The slope is ⅕. The point (-8, 7) lies on the line.

• 𝑦 + 8 = ⅕ (𝑥 − 7)

• 𝑦 +-8 = ⅕ (𝑥 + 7)

• 𝑦 + 7 = ⅕ (𝑥 − 8)

• 𝑦 − 7 = ⅕ (𝑥 + 8)

What is the equation and the slope of the line graphed?

• y = − 3, zero slope

• x = − 3, zero slope

• y = − 3, undefined slope

• x = − 3, undefined slope

What is the slope of the graph of the linear function showed on the grid?

Write your answer as a decimal.

Mathematical Equivalence

ON