Question

find the constant of proportionality (r) in the equation y=rx

Answer 1

Answer: R = 5

Step-by-step explanation:

y = mx + b

Where m = slope

y = y coordinate

and x = x  coordinate

So

100=20(r)

Therefore r=5

Tell me if you need any other help!!

Answer 2

Answer: r=5

Step-by-step explanation:

7 35

12 60

20 100

do you see the pattern? x is multiplied by 5 to make y, therefore y=5x

i have had this question on khan, so this is the correct answer .