Question

Which ordered pair in the form (a, b) is a solution of this equation?

Answer 1

C - (7,0) because 3x7= 21 add 4x0 = 0 which then equals 21 :)

Answer 2

Answer:

C.  (7, 0)

Step-by-step explanation:

Here, the given equation,

$3a-4b=21$

The order pair ( in which first value shows a and second value shows b ) that satisfies the given equation is called the solution of the equation,

For (-3, -2)

3(-3) - 4(-2) = 21 ( False )

For (0, 7),

3(0) - 4(7) = 21 ( False )

For (7,0),

3(7) - 4(0) = 21 ( True )

For (-2, -3),

3(-2) - 4(-3) = 21 ( False )

Thus, only (7,0) is the solution of the given equation,

Option 'C' is correct.