2023 8th grade Math December Final

Front

What is the formula to calculate the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Tags

CCSS.8.EE.B.5

Front

Find the slope of the line that passes through (1, -19) and (-2, -7).

Back

Slope = (-7 - (-19)) / (-2 - 1) = 12 / -3 = -4

Tags

CCSS.8.EE.B.5

Front

What is the process to solve a linear equation for x?

Back

Isolate x by performing inverse operations on both sides of the equation.

Tags

CCSS.7.EE.B.4A

Front

Solve the equation for x: 8x - 6x + 4 + 5 = 19.

Back

x = 5

Tags

CCSS.8.EE.C.7B

Front

What is the square root of a number?

Back

The square root of a number x is a value that, when multiplied by itself, gives x.

Tags

CCSS.8.EE.A.2

Front

The √40 is between which two integers?

Back

6 and 7

Tags

CCSS.8.NS.A.2

Front

How do you compare decimal, fraction, and percentage values?

Back

Convert all values to the same format (decimal, fraction, or percentage) to compare.

Front

Place the numbers in order from least to greatest: π, 31%, -0.32, 1/3, 3.1.

Back

-0.32, 31%, 1/3, 3.1, π

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

Front

What is a function in mathematics?

Back

A function is a relation where each input has exactly one output.

Tags

CCSS.8.F.A.1

Front

Does this mapping represent a function? (Example mapping: {1:2, 1:3})

Back

No, because the input 1 has two different outputs.

Tags

CCSS.8.F.A.1