x is 0.8
If you mean: y=7x -3 then it is a proportional relationship of a straight line equation.
9
If you mean x = 3 then the value of 7x-2x is 21-6 = 15
cot(15)=1/tan(15) Let us find tan(15) tan(15)=tan(45-30) tan(a-b) = (tan(a)-tan(b))/(1+tan(a)tan(b)) tan(45-30)= (tan(45)-tan(30))/(1+tan(45)tan(30)) substitute tan(45)=1 and tan(30)=1/√3 into the equation. tan(45-30) = (1- 1/√3) / (1+1/√3) =(√3-1)/(√3+1) The exact value of cot(15) is the reciprocal of the above which is: (√3+1) /(√3-1)
3a is part of an algebra equation. It mean the variable "a" time 3. to solve, you need to know the value of a. if the value of a is 5 the 3a would be 3 x 5 which is 15.
If you mean: y=7x -3 then it is a proportional relationship of a straight line equation.
9
You need to know what is the relationship between x and y. Are they proportional? Inversely proportional? Several other options also exist.
The absolute value of 3 divided by 15 is 0.2.
No I would need to be 3 baskets to 12 players and 4 baskets to sixteen players or 4 baskets to 20 players and 3 baskets to 15 players. Both are proportional.
a non examples is -3 equals -3
I would let "direct" mean "linear." The answer then becomes simpler; direct proportional may mean a relationship like 1-1, 2-2, 3-3, etcetera. Proportional by itself would then be free to indicate other proportions; like 1-1, 2-4, 3-9, etcetera -- in an exponential proportion.
15
3-6x = 15 -6x = 15-3 -6x = 12 x = -2
5
27-12=15 -x-=+ 15/5=3 12- -3= +15 12+15=27 n= -3
No. 8/9 is proportional to 4/3 not 3/4. Your teacher is trying to trick you.