Math 8 Review

Real numbers

100

Is 56 a real Number?

Yes

200

4 is=

A: Real, rational , whole, integer, natural 

B: rational , whole, integer, natural 

C: irrational 

D: Real, whole , natural 

A

300

Is 0 a natural number?

No

400

Is 0.6767676767 rational Or irrational?

Rational

Solving equations

100

4y + 2 = 18

find y

Y=4

200

x+4=x+4

find x

Infinite solutions  

300

7x+6=5x+2

find x

X=-2

400

7(6x-9)+3=3x+4

find x

(write answer as a fraction)

64/39

Linear vs. Nonlinear

100

What is the equation for linear equations?

Y=Mx+b

200

Is this equation linear or nonlinear?

y=6x+2

Linear

300

True or false this equation is nonlinear

y=5x+2

false 

400

linear Or nonlinear?

(3,6) (4,8) (5,10) (6,12)

Linear

Slope

100

Find the slope of the line that passes through the points J(6,2) P(4,1)

-1/2

200

Find the slope of the line that passes through the points v(-2,4) h(8,-4)

-4/5

300

Find the slope of the line that passes through the points t(6,7) d(3,5)

2/3

400

Y=3x-7 has a_______slope

A; positive 

B; negative 

A

Pythagorean theorem

100

What is the formula for Pythagorean Theorem

A; a+b=c

b; a-b=c

c; a^2+b^2=c^2

d; b+c=a

C

200

Find C:

leg A; 86

leg b; 9 

86.47

300

What dose C: 

Leg A; 4

Leg B; 7

8.06

400

Find c

leg a; 3

leg b; 71

71.06