If y varies directly with x, and y = 10 when x = 4, write the direct linear variation equation a. y = 10x b. y = 4x c. y = 5/2 d. y = 2/5

Step-by-step explanation:

Given,

y varies directly with x,

I.e.

Where,

k = constant of proportionality,

We have,

y = 10 when x = 4

From equation (1),

Again from equation (1),

Which is the required direct linear variation equation.

5x+2x=49

7x=49

x=7. 35 apples

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: