Question

0.01x - 0.3y = 1
y = 0.1x - 2

Which of the following systems is equivalent to the given system?


x - 30y = 100 and 10y = x - 20
x - 3y = 10 and 10y = x - 20
10x - 30y = 10 and 10y = x - 20

Answer 1

multiply each term of 1st equation by 100, what u get ?

Answer 2

idk @hartnn

Answer 3

what is 0.01 * 100 = ... ?

Answer 4

1 @hartnn

Answer 5

correct!
-0.3 * 100 = ... ?

Answer 6

-30 @hartnn

Answer 7

good!
so the 1st equation becomes
x-30y=100 right ?

multiply 2nd equation by 10, what u get ?

Answer 8

or since you have choices, you'd be able to figure out the correct one now ;)