Question

What are two ways to verify that your solutions are correct?

Check all that apply.

A. Try values for variables that don't match
B. Substitute back into both equations
C. Graph the equations and see where they meet
D. Substitute one variable's value for the other

Answer 1

B D i would say but check it with @dtan5457

Answer 2

i think its b and c

Answer 3

ITs B

Answer 4

graphing works too @some.random.cool.kid

Answer 5

it says choose 2 ways tho and i would say c is for linear equations more so than traditional equations

Answer 6

. Substitute one variable's value for the other
if you substitute x values into y that's not gonna give u right answer
if you get x and y values
you can replace x and y into the equation and look at that if both side are equal

Answer 7

you can graph both lines which is the easiest way and look at the point where both lines a re intersect

Answer 8

B, and C?

Answer 9

that's what i think @Tallan

Answer 10

I know but I think its for C for sure because you can graph to see if the lines intersect.
and you have to substitute the numbers to see if they work...

Answer 11

good job guys :)

Answer 12

yeah ^^^^^^^^^^^^^^^^^ up there i told u why is not D

Answer 13

well you have to do 1 at a time. so It could be D too?

Answer 14

nope u cannot replace x value into y
for example if x =2 and y =3
and equation is 2x+3y=3
you cannot replace x by 3 and y by 2

Answer 15

oh right!!

Answer 16

yesh

Answer 17

so that's why D is not right