The true answer here is B.
Answer:
2 is the constant of proportionality in the equation y = 2x .
Step-by-step explanation:
Definition of constant of proportionality
When two variables are directly proportional to each others .
Let us assume that u and v .
u \propto vu∝v
Than the equation becomes u= kv
Where k is called the constant of proportionality .
Thus in the question x and y are proportional variables .
i.e
y \propto xy∝x
y = kx
Where k is called the constant of proportionality .
Compare the equation y = kx with y=2x .
Thus
k = 2
Therefore 2 is the constant of proportionality in the equation y = 2x
the explanation is not mine only the answer
Answer:↓↓↓Under
Step-by-step explanation:
N.1:
x=4y-5
Substitue 2(4y-5)+3y=23
8y-10+3y=23
11y-10=23
11y=33
y=3
Substitue x=4(3)-5=12-5=7; x=7
N.2:
x+2y=6, x=6-2y
Substitute -3(6-2y)-y=7
-18+6y-y=7
-18+5y=7
5y=25
y=5
Hello,
Looking at the data, you should go with the second and fourth results.
On the second one, Dr. Appiah's M.A.D. is only 9.7 which is less than Dr. Singh's M.A.D. of 14.1
On the fourth one, Dr. Cantwell and Dr. Singh both have a M.A.D. that is only 0.1 from 14, so their ages vary by about the same amount.
Best of luck,
MrEQ
Answer:
equation: y = -2x + 7
Step-by-step explanation:
y = mx + b M: slope b: y intercept
m = -2
x = 3 and y = 1
b = y - mx = 1 - (- 2) x 3 = 7
equation: y = -2x + 7
check: ( 3,1) -2 x 3 + 7 = 1
