Illustrative Math - Algebra 1 - Unit 6 - Lesson 9 - Formative Library | Library

Which quadratic expression is written in standard form?

(x+3)x

x(x+4)^{2}

-x^{2}-5x+7

x^{2}+2(x+3)

A.SSE.2

F.IF.8.a

Explain why 3x^{2} can be said to be in both standard form and factored form.

A.SSE.2

F.IF.8.a

Jada dropped her sunglasses from a bridge over a river. Which equation could represent the distance y fallen in feet as a function of time, t, in seconds?

y=16t^{2}

y=48t

y=180-16t^{2}

y=180-48t

A.SSE.2

F.IF.8.a

A football player throws a football. The function h given by h(t)=6+75t-16^{2} describes the football’s height in feet t seconds after it is thrown.

Select all the statements that are true about this situation.

The function h has 2 zeros that make sense in this situation.

In the function, -16t^{2} represents the effect of gravity.

The vertex of the graph of h gives the maximum height of the football.

The football is thrown from ground level.

The football is thrown from 6 feet off the ground.

The outputs of h decrease then increase in value.

A.SSE.2

F.IF.8.a

10.

11.

Each day after an outbreak of a new strain of the flu virus, a public health scientist receives a report of the number of new cases of the flu reported by area hospitals.
Would a linear or exponential model be more appropriate for this data? Explain how you know.

A.SSE.2

F.IF.8.a

12.

13.

14.

This lesson is from Illustrative Mathematics. Algebra 1, Unit 6, Lesson 9. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/1/6/9/index.html ; accessed 26/July/2021.

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