| Question | Answer |
| 18 | 26=8+x | 5 | 3+x = 8 | 8 | 15+x=23 | 6 | -15+n=-9 | -16 | x+4=-12 | 20 | x-7=13 | -4 | x-9=-13 | 1 | x-6=-5 | -12 | x-15=-27 | -7 | x+16=9 | 16 | 6=a/4+2 | 4 | -6+x/4=-5 | 0 | 9x-7=-7 | -20 | 0=4+x/5 | 20 | -4=x/20-5 | -11 | -1=(5+x)/6 | -6 | 2(n+5)=-2 | function | {(2,3)(4,5)(8,9)(10,11)} | function | {(4,5)(7,12)(13,17)} | non function | {(2,4)(2,5)(2,7)(2,9)} | 49 | 1,4,9,16,25,36... | 93 | 30,21,51,42,72, 63... | 21 | 3,6,9,12,15,18... | function | graph | non-liner | graph |
