Illustrative Math - Algebra 1 - Unit 4 - Lesson 4

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Last updated about 1 year ago

12 Questions

Match each equation with a description of the function it represents.

		To get the output, multiply the input by 2, then add 4 to the result.
		To get the output, add 4 to the input, then multiply the result by 2.
		To get the output, multiply the input by 4, then add 2 to the result.
		To get the output, add 2 to the input, then multiply the result by 4.

8.F.1

F.IF.2

F.IF.4

F.BF.1.a

F.IF.1

Functions f and A are defined by these equations.

f(x)=80-15x

A(x)=25+10x
Which function has a greater value when x is 2.5?

8.F.1

F.IF.2

F.IF.4

F.BF.1.a

F.IF.1

10.

11.

Function F gives the cost, in dollars, of buying n apples.
Which statement best represents the meaning of C(10)=9?

Ten apples cost $9.

The cost of 10 apples

The cost of buying 9 apples

The cost of 9 apples is $10.

8.F.1

F.IF.2

F.IF.4

F.BF.1.a

F.IF.1

12.

Diego is baking cookies for a fundraiser. He opens a 5-pound bag of flour and uses 1.5 pounds of flour to bake the cookies.

Which equation or inequality represents f, the amount of flour left in the bag after Diego bakes the cookies?

f<1.5

f>3.5

f=1.5

f=3.5

8.F.1

F.IF.2

F.IF.4

F.BF.1.a

F.IF.1

This lesson is from Illustrative Mathematics. Algebra 1, Unit 4, Lesson 4. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/1/4/4/index.html ; accessed 26/July/2021.

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