Question

using the general formula y=mx that describes direct proportionality, find the value of m if y is directlt proportional to x and y=20 when x=1-

Answer 1

using the general formula y=mx that describes direct proportionality, find the value of m if y is directlt proportional to x and y=20 when x=10****

Answer 2

x = 10 ? if yes , you have :

y = mx ==> m = y/x = 20/10 = 2 ==> m = 2

Answer 3

m is not normally used. m is usually k in classes

Answer 4

perhaps this will help? http://www.maths4scotland.co.uk/GHS%20Exam%20Revision/GHS%20Credit/Proportion.swf

Answer 5

y = mx
20 = 10m
2=m