Find an equation of variation for the given situation.
- y varies jointly as x and z , and y=18 when x=3 and z=3
A) y=6 x
B) y=4 x z
C) $y = \frac { 18 } { x Z }$
D) y=2 x z

Question

Find an equation of variation for the given situation.
- y  varies jointly as  x  and  z , and  y=18  when  x=3  and  z=3 
A)  y=6 x 
B)  y=4 x z 
C) $y = \frac { 18 } { x Z }$
D)  y=2 x z

Quizplus · Accepted Answer

The equation for joint variation is $y = kxz$, where $k$ is the constant of variation. To find $k$, use the given values: $18 = k \cdot 3 \cdot 3$, solving for $k$ gives $k = 2$, so the equation is $y = 2xz$.

Find an Equation of Variation for the Given Situation y=18xZy = \frac { 18 } { x Z }y=xZ18​

Find an Equation of Variation for the Given Situation $y = \frac { 18 } { x Z }$