12/11/23 Final Exam Review #3 ANW

Given y = 2x + 1, find the value of y when x = 5

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Tags

CCSS.HSF.IF.A.2

Given f(x) = x² + 3x + 1, find f(-4).

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CCSS.HSF.IF.A.2

f(x) is the same thing as ______.

• y

• x

• input

• an equation

Answer explanation

f(x) represents the dependent variable, which is usually denoted as y in mathematical equations.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

• -2

• -6

• -38

• 58

Answer explanation

The correct answer is -6 because when we substitute 2 into the function, we get -6 as the result.

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CCSS.HSF.IF.A.2

• -2

• -6

• 2

• 4

Answer explanation

The correct answer is 2 because when we substitute x=2 into the function f(x)=-6, we get f(2)=-6.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

• 0

• 2

• 6

• -1

Answer explanation

The correct answer is 6 because the function evaluated at 1.5 equals 6.

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CCSS.HSF.IF.A.2

What is the domain?

• the set of all x-values

• the set of all y-values

• a special type of function

• a function with more than 1 output for every input

• Same as an output

Answer explanation

The domain is the set of all x-values. It represents the possible inputs for a function.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

• subtract 8

• divide 7

• x=3

• add 8

• multiply 7

• subtract 7

• x=2

• x=5.2

• x=7

• divide 8

Answer explanation

To solve the equation, first isolate the variable by subtracting 8 from both sides. Then, divide both sides by 7 to find the value of x. The correct answer is the value of x that satisfies the equation.

Tags

CCSS.7.EE.B.4A

• 2

• -10

• 10

• 2x

• y

Answer explanation

The slope (m) of the equation is 2, and the y-intercept is -10.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

• 2/3

• -3

• 2x

• 2/3x

• y

• 3

Answer explanation

The slope of the equation is 2/3 and the y-intercept is -3, which matches the correct choices.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3