Section 2.1 Quiz 4.1 
Question: 
Find the distance between the points (1, 2) and (4, 1). Express your answer as a decimal approximation rounded to three decimal places. 

Section 2.2 Quiz 4.2 
Question: 
Find the yintercepts of the equation (x + 2)^{2} + (y – 7)^{2} = 85. 

Section 2.3 Quiz 4.3 
Question: 
What is the slope of the line through the points (3, 4) and (4, 3)? Express your answer as a fraction in lowest terms. 

Section 2.3 Quiz 4.4 
Question: 
What is the yintercept of the line through the points (1, 2) and (2, 1)? Express your answer as a fraction in lowest terms. If the line does not have a yintercept, enter none. 

Section 2.4  Question: 
Determine whether the lines –1x + 4y = 2 and –4x + 1y = –4 are parallel, perpendicular or neither. 

Quiz 4.5 
Parallel Perpendicular Neither 
Section 2.4 Quiz 4.6 
Question: 
Write the equation of the circle in standard form. 

Section 2.6 Quiz 4.7 
Question: 
You know that y varies directly with x^{} and inversely with t^{2}. If y = 1/2 when x = 3 and t = 2, what is the value of y when x = 2 and t = 3? (Express your answer as a fraction in lowest terms.) 

Variation: 
You know that y varies directly with x^{3} and inversely with t^{}. If y = 2 when x = 2 and t = 5, what is the value of y when x = 5 and t = 3? (Express your answer as a fraction in lowest terms.) 

Section 2.6 Quiz 4.8 
Question: 
An independent contractor is resurfacing a parking lot. He charges his customer $320 per day ($320/day) for asphalt cost. If the contractor actually uses 20 tons per day (ton/day), what price is he charging his customer for the asphalt (in units of $/ton)? 

Variations: 
A car traveling 50 miles per hour (mi/hr) has a fuel efficiency of 12.5 miles per gallon (mi/gal). How fast does it consume fuel (in units of gal/hr)? 

A company produces salt by evaporating sea water. The concentration of salt in sea water is 2.5 kg/m^{3}. How much sea water do they need to evaporate (in units of m^{3}/day) to produce salt at a rate of 2,000 kg/day? 
