Math 8

Equations

100

3x - 9 =18

x=9

200

5(x+4) = 50

x = 6

300

2(x+3) = x + 11

x = 5

400

5(x-2) = 2x +17

x = 9

500

−3x + 7 = −8x + 47

x = 8

Geometry

100

What is an angle less than 90 degrees?

ACUTE
OBTUSE
RIGHT
STRAIGHT

acute angle

200

If two angles are supplementary and one angle is 50 degrees, what is the measure of the other angle?

150 degrees

300

Two lines that never intersect are called?

Parallel lines

400

If you have a pair of parallel lines cut by a transversal, are the corresponding angles are congruent or supplementary?

congruent

500

What do we call the transformation that will "flip" a geometric object?

Reflection

Linear Equations

100

What is the slope and y-intercept of the following line:

y = 3x + 9

slope = 3

 b = 9

200

What is the slope and y-intercept of the following line:

y = x - 7

slope = 1

b = -7

300

Write the equation of the line with a slope of -4 and a y-intercept of 5

y = -4x + 5

400

Find the slope between two points:

(3,2) and (7,12)

=5/2 or 2.5

500

Find the slope between two points:

(-7, -3) and (-2, 7)

2

Functions

100

True or False

A function is a rule that assigns to each input to the function exactly one output

TRUE!!!!!

200

What is the domain of a function? 

The inputs (x's) or outputs (y's)

inputs

300

Which set of ordered pairs represents a function?

A:  {(−1,−3),(0,−7),(3,3),(3,−4)}

B:  {(7,9),(−5,7),(−5,8),(4,−4)}

C:  {(−6,−1),(−8,4),(−5,4),(3,−9)}

D:  {(−1,0),(−1,−4),(8,−3),(−4,−6)}

C

400

Which set of ordered pairs does not represent a function?

A:  {(−7,8),(−3,7),(−4,−1),(−1,7)}

B:  {(−1,−6),(3,4),(−6,5),(−6,3)}

C:  {(8,6),(−9,1),(−5,2),(7,9)}

D:  {(−1,2),(9,−9),(−9,−1),(0,2)}

B

500

Sketch an example of a linear function and a non-linear function

LINE

not a line

Pythagorean Theorem / Volume

100

What is the volume of a cylinder with a height of 12 feet and a base radius of 10 feet, to the nearest tenths place?

3,769.9 cubic feet

200

Find the length of the hypotenuse if the two legs of a right triangle are 12 and 9.

15

300

One of the legs of a right triangle measures 19 cm and its hypotenuse measures 20 cm. Find the measure of the other leg. If necessary, round to the nearest tenth.

6.2

400

What is the volume of a sphere with a diameter of 6.3 cm, rounded to the nearest tenth of a cubic centimeter?

130.9

500

Find the volume of a right circular cone that has a height of 17.4 m and a base with a diameter of 3.1 m. Round your answer to the nearest tenth of a cubic meter.

43.8 cubic meters