8th Grade Math Review

8th Grade Math 1

100

What is slope intercept formula?

y=mx+b

200

How do you find the slope of a line from the graph?

Find the rise over the run between two points.

300

What is another name for slope?

Rate of change, unit rate, m, constant of proportionality

400

What is another name for the y-intercept?

Starting point, fee

500

What is the y-intercept of the line?

2 

8th Grade Math 2

100

What is 1,0000⁰

1

200

4^-3 simplified

1/64

300

Write 5.76 x 10⁴  in standard form

57,600

400

On a graph, how can you determine if graph is proportional?

the line goes thru the origin

500

A triangle is a right triangle if...

the sum of both legs squared is equal to the hypotenuse squared

8th Grade Math 3

100

How can you determine if a table is proportional?

divide the "y" value by the "x" value. Or if the point 0,0 is on the table.

200

True or false: a graph is proportional if the graph is positive

true

300

The opposite of squaring a number is taking the...

Square root

400

An irrational number is a number that...

never ends (terminates) AND never repeats

500

What is the radius of a sphere that can hold 343pi cubed centimeters of water?

6.36 cm

8th Grade Math 4

100

x²=81

x=9

200

What is the square root of 49?

7

300

To determine if something is a function do we have to see if the x values or y values repeat?

x values

400

How can you determine that a table is proportional if the table does not have (0,0)?

See if the change in y and change of x is the same

500

This relationship is...

x   | y

9   | 3

12 | 4

15 | 5

30 |10 

proportional

8th Grade Math 5

100

All the angles in a triangle should add up to what degrees?

180 degrees

200

How can we express slope as a relationship?

y per x

300

What is the value of x when you have a hypotenuse of 19.7, and a side length of 18.

8

400

Translation moves a shape in these directions

Up, Down, Left, and Right

500

What is the length of the hypotenuse when the legs are 3 and 4

a²+ b² = c²

3² + 4² = c²

9 + 16 =25

c = 5

8th Grade Math 6

100

What are the 4 types of transformations?

Translations (slide), Reflections (flip), Rotations (turn), and Dilations (grow/shrink)

200

What is the slope of y=7x+12

7

300

Simplify:2³ 

8

400

What transformation does not preserve it's congruence?

dilation

500

If you have the point (5,4) and it is rotated 90^o counterclockwise, what will the new point be located?

(-4,5)