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1

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

1

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

A.SSE.2

F.IF.8.a

1

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

1

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

The football is thrown from 6 feet off the ground.

The football is thrown from ground level.

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

The outputs of h decrease then increase in value.

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

A.SSE.2

F.IF.8.a

1

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

1

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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Lesson 9 - Unit 6 - Algebra 1 - Illustrative Mathematics

Lesson 9 - Unit 6 - Algebra 1 - Illustrative Mathematics

Which quadratic expression is written in standard form?

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

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?

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.

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.

Which quadratic expression is written in standard form?

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

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?

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.

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.

Lesson 9 - Unit 6 - Algebra 1 - Illustrative Mathematics

Lesson 9 - Unit 6 - Algebra 1 - Illustrative Mathematics

Which quadratic expression is written in standard form?

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

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?

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.

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.

Which quadratic expression is written in standard form?

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

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?

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.

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 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.

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 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.

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.