write the direct variation equations, then find y when x =5. show all work and explain.

y=20 when x=5.

Step-by-step explanation:

The easy way to solve this problem is to find what x was multiplied by, and then multiply the y by the same number.

To find the amount x was changed by, we can divide the result by the initial value.

Like this:  5/3=1.666667

Now we just need to multiply the initial y by 1.66667 to get the result.

12*1.6666667=20.

y=20 when x=5.

Hope this helps!

y=20

Step-by-step explanation:

Direct variation is given by

y = kx

When y =12 x =3

12 = k3

Divide each side by 3

12/3 = 3k/3

4=k

The equation is

y = 4x

Now find y when x = 4

y = 4(5)

y =20

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

the function makes a strait line horizontally with no x intercept but a y intercept at 9.