Changing the subject

change subject + -

100

y = x + 2

x = y - 2

200

y = x - 4

x = y +4 

300

z =  - 3 + b

b = z +3

400

k - 6 = z + v (make z the subject)

z= k-6 - v

500

2g + 6 = h - j (make h the subject)

h = 2g + 6 +j

change subject multiply

100

y = 2x

x = y / 2

200

5x = y 

x = y/5

300

h = 3g

g= h/3

400

y + 7 = 5j (make j the subject)

j = (y +7) / 5  

no need for brackets but fraction line must be under the whole of y +7

500

g + 3h = 4y (make y the subject)

y = (g +3h)/4 

no need for brackets but fraction line must be under g +3h altogether

change subject multistep

100

y = 3x + 6

x = (y-6)/3

200

-3 + 5x = y

x= (y+3)/5

300

-8 +9v = g

v = (g +8)/9

400

b - 5 + 6h = k (make h the subject)

h = (k -b +5)/6

500

j - 5 = 5mk + 6 (make k the subject)

k = (j -5 -6)/(5m)

change subject fraction

100

y = ( x + 5) / 2

x = 2y - 5

200

( x- 6 ) / 7 = y

 x = 7y + 6

300

3x / 4 = y

x = 4y / 3

400

(x/5) + 7 = y

 x = 5 (y - 7) 

or x = 5y - 35 (give yourself an extra 100 points if this was your answer!)

500

2(j - 8) / 7 = b 

Hint: expand bracket first

j = (7b + 16) / 2

Trivia

100

What fictional animal appears on the flag of Wales?

Dragon

200

Complete these lyrics:

Because maybe
You're gonna be the one that saves me
And after all
___________ 

You're my wonderwall

300

What is the main bad guy in Lord of the Rings called?

Sauron

400

to the nearest 1000km how far is it from where Mr Davies grew up to Orara high school?

(If no one gets it then closest gets the points)

16,879.89km

Approximately 17000km

500

In Greek mythology who is the God(dess) of the sea?

Poseidon