Question

The value of x in this system of equations is 1.3x + y = 9y = –4x + 10Substitute the value of y in the first equation:Combine like terms:Apply the subtraction property of equality:Apply the division property of equality:3x + (–4x + 10) = 9–x + 10 = 9–x = –1x = 1What is the value of y?

Answer 1

y=6

Explanation:

Answer 2

3x + y = 9

y = –4x + 10

First we will substitute y= -4x+10 in the first equation in place of 'y'

3x + (-4x+10)= 9

⇒3x -4x +10 = 9

⇒ -1x +10 =9

⇒ -1x = -1

⇒ x = -1/-1 = 1

⇒ x= 1

Now, for finding the value of y , we will plug x=1 into the second equation.

y= -4x +10

y= -4(1) +10

y= -4 +10

y= 6

So, the value of y is 6 .