Question

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

7a – 5b = 28


A.
(–2, –3)

B.
(0, 4)

C.
(–3, –2)

D.
(4, 0)

Answer 1

Which points have opposite x- and y-coordinates [for example, (2, –2) or (–3, 3)]? (Hint: Some answers may have some, but not all points that name opposites. Choose the answer that contains only points that have opposite x- and y-coordinates for each point named.)

A.
C, D, Z

B.
D, L

C.
Z, L

D.
D, Z

Answer 2

http://static.k12.com/calms_media/media/308500_309000/308801/2/e1dc741896a486a1864e2616dff7a61dc90503be/MS_ALG_S1_07_02_quiz_Q1_question.gif

Answer 3

@jordanloveangel for the first question you would have to make one of the unknown 0

Answer 4

example when a=0 what is b
or when b=0 what is a
and look for which of your option is right

Answer 5

for the first one im thinking B or D

Answer 6

ok so on the first one I solve for one variable A and I got A = 5/7b + 4 now plug this into A drawing below

Answer 7

so D?

Answer 8

yep!! :) sorry if it is confusing

Answer 9

kk it is =_=

Answer 10

@catlover can u help me with the 2end one

Answer 11

ok so pretty much solve for a letter, I chose A then plug A in to get B then plug B in to get A without b in it, and yes I will help you with the second one

Answer 12

2end one its to hard to solve =_=

Answer 13

ok so it has to be (-, +) or (+, -) the ones that I see are D and L so it would be B