The ratio of 2:9 has to be 2:9 do to the fact you can't simplify the fraction 2/9.
Hoped I helped.
Answer:
The point (2, -1 ) is not on the graph of the line.
Step-by-step explanation:
3x–4y–12=0
3*2 - 4*(-1) - 12= 0
6 + 4 - 12 =0
10 - 12 = 0
- 2 = 0 , false, so the point (2, -1 ) is not on the graph of the line.
You just have to make equal fractions, so if c = 4 that means
=
so cross multiply to get 7a = 20; divide both sides by 7 to get a = 2.86 and do the same with the other ones
If c = 11 then
=
cross multiply to get 7a = 55; divide both sides by 7 to get a = 7.86 and so on
The answer is true to the other question
Hope this helps :)