Write the direct variation function given that y varies directly with x, and y = 42 when x = 7. HELP ASAP!!

y = 6x

Step-by-step explanation:

y α x

y = kx

Where k is the constant of proportionality.

When y = 42; x = 7;

We substitute these known values in the equation,

y = kx

42 = k7

Dividing both sides of the equation by 7 to find the value for k, we have

42/7 = k7/7

Therefore,

K = 6.

Having found the value of k,

We substitute this value into the relationship

y = kx

Therefore we have,

y = 6x.

The direct variation function is therefore,

y = 6x.

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

answer:   y=2x-3

step-by-step explanation: