Question

How many solutions are there to the following system of equations?

2x + 6y = 4
5x + 15y = 10

Answer 1

A.
infinitely many

B.
0

C.
2

D.
1

Answer 2

divide 1st by 2
divide second by 5

Answer 3

1, Discriminant = 49 - (4*5*3) = -11
2, nemaproblema:
x² - 7/5x = -3/5
(x - 7/10)² - 0.49 = -0.6
(x - 7/10)² = -0.11

Both indicates there is no solution.

Answer 4

2x + 6y = 4--->x+3y=2
5x + 15y = 10--->x+3y=2
and now you have 2 variables and one equation
second is the same as first

Answer 5

So the answer is A?

Answer 6

can you go on ?

Answer 7

What do you mean?

Answer 8

yes
there is infinite solution

Answer 9

ok Thanks for the help!

Answer 10

when variables are more than equations
there is infinite solution