Question

given that m varies directly as y and m = 12 y =6 calculate y when m = 20 and m when y = 7

Answer 1

Step-by-step explanation:

veriation equation

y=km

6=k.12

k= 6/12

k=1/2

now put m value in this equation

y=km

y=1/2×20

y= 10

now find m if y =7

m= ky

12= k.6

k=12/2

k=2

put all value in this equation

m=ky

m=2.7

m=14

so if y=7 then m will be 14

and if m= 20 then y will be 10