Common Core Standard 8.SP.A.3 Questions

Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept. For example, in a linear model for a biology experiment, interpret a slope of 1.5 cm/hr as meaning that an additional hour of sunlight each day is associated with an additional 1.5 cm in mature plant height.

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Grade 8 Linear Equations CCSS: 8.EE.B.5, 8.SP.A.3

A teacher grades 5 tests in 30 minutes. If a graph was made to show the number of tests per hour that the teacher can grade, what would be the slope of the graph?

$6$
$1/6$
$60$
$10$

Grade 8 Linear Equations CCSS: 8.EE.B.5, 8.SP.A.3

A garden hose is used to fill a swimming pool. In 15 minutes, 195 gallons of water is added to the pool and this rate (gallons per minute) remains constant. If this information was graphed, what would be the slope of the graph?

$15/195$
$13$
$1/13$
$39/3$

Grade 8 Linear Equations CCSS: 8.SP.A.3

At 3 o'clock a water tank already contains 55 gallons of water when Baxter begins to fill it. Water flows into the tank at a rate of 8 gallons per minute. Write a linear equation to model this situation.

y = 55x + 3
y = 55x + 8
y = 8x + 55
y = 8x + 3

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