Algebraic Reasoning (Expressions, Equations, and Generalized Relationships)>Collecting Bivariate Data Creating Scatterplots and Modeling with Functions(TEKS.AQR.9-12.3.A) Practice Test

Daily high temperature vs iced coffees sold at a cafe. Let $x$ be temperature (°F) and $y$ be coffees sold. Day | Temp (°F) | Coffees 1 | 68 | 35 2 | 72 | 45 3 | 75 | 52 4 | 78 | 60 5 | 82 | 70 6 | 85 | 80 7 | 88 | 88 8 | 92 | 98 Use a simple linear model built from the endpoints (68, 35) and (92, 98).

Texas highway driving: speed vs fuel efficiency for one car. Let $x$ be speed (miles/hour) and $y$ be mpg. Trial | Speed (mph) | MPG 1 | 40 | 28 2 | 50 | 32 3 | 60 | 34 4 | 65 | 35 5 | 70 | 34 6 | 75 | 32 7 | 80 | 30 8 | 85 | 27