To draw the graph of 2x-y-4=0 if y=-4 then find the value of x​

x=4

Step-by-step explanation:

2x-4-4=0

2x-8=0

2x=8

x=8÷2

x=4

x=0

Step-by-step explanation:

Let's solve your equation step-by-step.

2x−(−4)−4=0

Step 1: Simplify both sides of the equation.

2x−(−4)−4=0

2x+4+−4=0

(2x)+(4+−4)=0(Combine Like Terms)

2x=0

2x=0

Step 2: Divide both sides by 2.

2x /2=0/2

x=0

square root

step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.