Question

Given -3x + 2y = 1 and x = 5, solve for y.

a.-7

b.7

c.-8

d.8

Answer 1

Answer:
`y=8`

Explanation:

1. You already know the value of the variable
`x`, which is:

`x=5`

2. Therefore, you need to substiute the value
`x=5` into the equation
`-3x+2y=1` and then you must solve for
`y`, as following:

`-3x+2y=1\\-3(5)+2y=1\\-15+2y=1\\2y=1+15\\2y=16\\y=(16)/(2)\\y=8`

3. The result is:
`y=8`

Answer 2

d. 8

Explanation:

Given: -3x + 2y = 1 and x = 5

Now plug x =5 in the given equation and find the value of y.

-3(5) + 2y = 1

-15 + 2y = 1

2y = 1 + 15

2y = 16

Dividing both sides by 2, we get

y = 8

Thank you.