Slope STAAR Question

A water tank currently contains 275 gallons of water. The amount of water in the tank will decrease at a constant rate of 15 gallons per week.

Which function can be used to find t, the total number of gallons of water in the tank after w weeks?

• t = 15w − 275

• t = −15w + 275

• t = 275w − 15

• t = −275w + 15

Triangle KLM and triangle PRS are similar right triangles.

Which proportion can be used to show that the slope of KM is equal to the slope of PS?

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The graph of a linear function passes through the points (-1, -1/4) and (1, -3/4).

Which equation represents the function?

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