Question

To draw the graph of 4x + 5y = 19, if x = 1 is taken then what will be the value of y?

Options

• 4

• 3

• 2

• –3

Answer 1

3

Explanation:

1. Substitute the given value

To find the value of y, substitute x = 1 into the given linear equation 4x + 5y = 19:

4(1) + 5y = 19

4 + 5y = 19 

2. Isolate the variable term

Subtract 4 from both sides of the equation to isolate the term containing y:

5y = 19 – 4 

5y = 15

3. Solve for y

Divide both sides by 5 to solve for y:

`y = 15/5`

y = 3