Answer:
The constant of proportionality is 1/25.
Step-by-step explanation:
Chart values:
a | b
75 3
200 8
1525 61
10 0.4
To find the constant, divide your "b" values by your "a" values.
3/75 simplifies to 1/25 (GCF is 3)
8/200 simplifies to 1/25 (GCF is 8)
61/1525 simplifies to 1/25 (GCF is 61)
0.4/10 becomes 4/100, which simplifies to 1/25 (GCF is 4)
Since all four come to the same constant, 1/25 is the constant of proportionality.
The equation here would be:
The first one is normally, the second is in slope form.
Answer:
w = 2.5
Step-by-step explanation:
Write these 2 equations to represent the problem:
Then this can be solved as a system of equations here. I'll solve by substitution, and as the 
is already solved for at the top:
If you just need the width, then you're already done there. I'll find the other variable too, and then check it to be sure it's correct.
Now, confirm that with the second equation:
Answer:
74
Step-by-step explanation:
2(28x9)
74 is the perimeter
Answer:
y=5x+13 is the answer
Step-by-step explanation:
so you have to use the y=mx+b method
you plug in 3 for y and -2 for x
3=5(-2)+b,
multiply 5 and -2 to get -10
and it should leave you with 3=-10+b
add -10 to both sides, 10 + 3= 13 and 13 is your b (which is your y-intercept)
13=B
