Question

Given the equation - 2x + 7y = -25 find the

value of y if the ordered pair (2,y) is a solution.
A 19.5
B -3
C -19.5
D 3​

Answer 1

y=-3

Explanation:

-2x+7y=-25

put x=2 in the above equation

-2(2)+7y=-25

-4+7y=-25

adding 4 on both sides

-4+4+7y=-25+4

7y=-21

dividing 7 on both sides

7y/7=-21/7

y=-3