Question

Given -3x + 2y = 1 and x = 5, solve for y. a.-7 b.7 c.-8 d.8

Answer 1

Answer: $y=8$

Step-by-step 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:

$-3x+2y=1\\-3(5)+2y=1\\-15+2y=1\\2y=1+15\\2y=16\\y=\frac{16}{2}\\y=8$

3. The result is: $y=8$

Answer 2

Answer:

d. 8

Step-by-step 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.