Question

Which ordered pair is a solution of the equation y = x - 2

a. (3,1)
b. (1,3)
c. (-1,3)
d. (3, -1)?

Answer 1

y = x - 2.....its just a matter of subbing in ur points to see which ones are true.

(3,1)...x = 3 and y = 1

y = x - 2
1 = 3 - 2
1 = 1 (correct)

so ur solution is (3,1)

Answer 2

Option (a) is correct.

(3, 1) is the ordered pair that is the solution of the equation y = x - 2

Explanation:

Given : equation y = x - 2

We have to find the ordered pair that is the solution of the equation y = x - 2

We will check each option one by one and see which satisfies the given equation.

Consider equation y = x - 2

a) (3, 1)

Put x = 3 and y = 1

LHS = 3 - 2 = 1 = y

b) (1, 3)

Put x = 1 and y = 3

LHS = 1 - 2 = -1 ≠ y

c) (-1, 3)

Put x = -1 and y = 3

LHS = -1 - 2 = -3 ≠ y

d) (3, -1)

Put x = 3 and y = -1

LHS = 3 - 2 = -3 ≠ y

Therefore, only (a) is correct.