Writing and Graphing Equations in Two Variables

Question 1

From the graph, the input value is approximately .

Revolt · Accepted Answer

C: 3.5

Question 2

Select the equation that can be used to find the input value at which f (x ) = g (x ), and then use that equation to find the input, or x -value.

Revolt · Accepted Answer

A: 1.8x – 10 = –4; x =

Question 3

What are the possible steps involved in solving this equation? Check all that apply.

Revolt · Accepted Answer

B: Distribute 2 to 9.7 and −4.8x.; C: Combine 3.4 and 19.4.; E: Subtract 22.8 from both sides.; F: Divide both sides by −9.6.

Question 4

A rental car company charges $0.50 per mile and a flat rate of $30.00 for any type of sedan. If m represents the number of miles driven and C(m) represents the total cost for renting a sedan, what is the linear equation that represents a cost of $130?

Revolt · Accepted Answer

C: 130 = 0.50m + 30

Question 5

If C(m) = 0.50m + 30 represents the cost of renting a car, how many miles were driven if the cost is $130?

Revolt · Accepted Answer

C: 200 miles

Question 6

The x-value at which the two functions’ values are equal is .

Revolt · Accepted Answer

D: 10/3

Writing and Graphing Equations in Two Variables Answers

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