Question

for the given equation 2x + y =7 find value of y for x = 1,2,3​

Answer 1

Step-by-step explanation:

Given equation is:

2x+y=7

For x = - 1, we get

−2+y=7

⇒y=9

∴ (-1, 9) is a solution.

For x = 0, we get

⇒0+y=7

⇒y=7

∴ (0, 7) is a solution.

Answer 2

Given,

$2x+y=7$

We have to find the value of $y$ for $x=1,2,3$

We have to substitute the given $x$ values in the given equation

Step 1: $x=1$

$2x+y=7$

$2\times1+y=7\\y=7-2\\y=5$

Step 2: $x=2$

$2x+y=7\\2\times2+y=7\\4+y=7\\y=7-4\\y=3$

Step 3: $x=3$

$2x+y=7\\2\times3+y=7\\6+y=7\\y=7-6\\y=1$

Therefore, the values of $y$ is $5,3,1$.