Question

(08.03)A set of equations is given below:

Equation A: y = x + 1
Equation B: y = 4x + 5
Which of the following steps can be used to find the solution to the set of equations?
A. x + 1 = 4x + 5
B. x = 4x + 5
C. x + 1 = 4x
D. x + 5 = 4x + 1

Answer 1

A

Explanation:

y= x+1 at the same time y=4x+5

x+1= 4x+5, so answer is A

Answer 2

A. x+1= 4x+5

Explanation:

To solve the set of equation we can use substitution method.

Here the given set of equations are

Equation A :
`y=x+1`

Equation B :
`y=4x+5`

Now in substitution method we substitute y in terms of x from

first equation in to 2nd equation.

In other words we can also say that we equate both equations

so we have

`y=x+1 = 4x+5`

or we can also say that

`x+1= 4x+5`

hence the correct option is option A