Back to Interpret slope and intercept of a linear model — Problem 4 · Task Set 9

Exercises: Interpret the Slope and Intercept of a Linear Model

Work through each section in order. For every interpretation, write a full sentence about the real situation and include UNITS. Remember: the slope is a rate of change (y-units per x-unit) and the intercept is the predicted value when x = 0 (in y-units) — but the intercept is only meaningful when x = 0 is realistic and near the data.

Grade 9·20 problems·~35 min·Common Core Math - HS Statistics and Probability·group·hss-id-c-7
Work through problems with immediate feedback
A

Fluency Practice

Interpret each slope or intercept as a sentence with units.

1.

A candle's height is modeled by y=3x+90y = -3x + 90, where xx is minutes burning and yy is height in cm. What is the candle's predicted height (in cm) at the start, when x=0x = 0?   ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲