Suppose y varies jointly with x and z. if y=20 when x=2 and z=5, find y when x=14 and z=8.

K=2, y=224

Step-by-step explanation:

Y(proportional sign)xz

Y=kxz

20=k×2×5

10k=20

K=2

Find y when x=14andz=8

Y=2xz

Y=2×14×8

Y=224

c: y > - 1/6x + 1

step-by-step explanation:

dashed line - meaning this < or > also not equal

solid line - meaning this < or > also equal

your answer is c because y > means up & it's shaded up, but y < means down

hope this ! : )

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x