Question

Which ordered pair in the form (a,b) is a solution of this equation?
3a-4b=21
A) (7,0)
B) (-2,-3)
C) (0,7)
D) (-3,-2)

Answer 1

@Peach-es1234

Answer 2

subtitute the points:

3*7-4*0=21 check if this is correct
3*(-2)-4*(-3)=21 check is this is correct
3*0-4*7=21 check is this is correct
3*(-3)-4*(-2)=21 check is this is correct

Answer 3

Well fit in each number and it should give you the answer

Answer 4

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

Answer 5

Nope it is the second one

Answer 6

ummm....?? i dont kow who is right? @Vickyisthesmartone123 can you explain?

Answer 7

3*7-4*0=21
3*7-0=21
21=21

Answer 8

@AlexandervonHumboldt2 yea i was kinda leaning toward that one since the others didnt really make sense to me thx

Answer 9

It is a! :)

Answer 10

Yep sorry it is A

Answer 11

@Peach-es1234 thx for your help. another?

Answer 12

Ya I put c instead of a. sorry bout the confusion.

Answer 13

Ask Away! :)

Answer 14

MEDAL ME OR WHOEVER HELPED YOU THE MOST KID!