8th Grade Math Review Round 1

8th Grade Math 1

100

What is slope intercept formula?

y=mx+b

200

y=mx+b, what part of the formula is the slope?

m

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

A park is 8.62 x 10^3 sq. feet. Park B is 1.56 x 10^5 sq. feet. How many times greater is Park B than Park A? Round to the nearest 10th.

18.1

200

Write the number below in standard notation

.000452

4.52 x 10^-4

300

If a relationship has one positive and one negative, what type of association is it?

negative

400

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

the line goes thru the origin

500

What are the 2 properties that nonlinear functions have?

x in denominator and exponents

8th Grade Math 3

100

How can you determine if a table is proportional?

divide the "y" value by the "x" value

200

A ladder is 12 feet long. It is placed 4 feet away from the wall. How far up the wall is the ladder? Round the nearest whole number

11

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

Write an example of no solution

3x-2=3x+4

8th Grade Math 4

100

x²=81

x=+/-9

200

Translate the point (1,7) 2 units right and 1 unit down.

(3, 6)

300

What is a function?

x values dont repeat

400

Is the set a function? (1,4) (-1,4) (3,6) (5,8)

yes

500

A:y=1/4x + 6     Which has the greatest rate of change?

B:

(2,6)

(4,4)

(6,8)

b

8th Grade Math 5

100

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

180 degrees

200

If the input of a linear function y= 2x - 8 is -4, what is the output?

-16

300

What is the value of x when you have a hypotenuse of 19.7, and a side length of 18. Round to the nearest whole number

8

400

In dilations, what is the term you multiply by called

scale factor

500

What is the length of the hypotenuse when the legs are 6 and 9? Round to the nearest 10th

a²+ b² = c²

^{6 2} + 9² = c²

36 + 81 =117

c = 10.8

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  2y=7x+12

7/2

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)