Mental maths
Logarithms
Intercepts
Domain & range
100

6 times 6

36

100

32 = 9

Log3 9=2

100

 Find the y intercept-  Y = x+ 12x + 32 

X= -4, x= -8

100

Given the relation (3,2)(1,6)(-2,0)

Domain =(3,1,-2)

range = (2,6,0)

200

1000 divided by 10

100

200

Log10 1= 0

10= 1 

200

 Find the y intercept- Y=3(2-x)(3x=1)

x=2 , x=-1/2.

200

What is the domain of the relation 

(2,1)(4,2)(3,3)(4,1)

(2,3,4)

300

2014 − 4102

-2088

300

3-3 = 1/27

log3 1/27=-3

300

Write the y intercept- F(x) = x2+ 5x + 12

(0,12) 

300

Find the domain of the function:

(-5,4),(0,0),(5,-4),(10,8),(15,-12)

(-5,0,5,10,15)

400

92 is a prime number (true or false)

false 

400

log ”8”/log 8 

1/2 

400

Find the vertex- y=x2+10x + 16

(-5,-9)

400

Find the domain of the function :

f(x)= 5-x+x3

(-♾,♾)

500

(999 − 99 + 9) ÷ 9

101

because 909 divided by 9 is 101

500

0.001= 10-3

Log10 (0.001)=-3

500

 Find the vertex - Y= (x+5)2 -1

 (-5,-1)

500

Given the table find the domain , relation and range 

x = -1 | 0 | 4 | 7

y = 3 | 6 | -1 | 3 

Relation = (-1,3) (0,6)(4,-1)(7,3)

domain= (-1,0,4,7)

range = (6,-1,3)

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