Question

3. x = –4y + 4
2x + 8y = 8 (1 point)
one
two
infinite
none
4. y = 6x + 2
3y – 18x = 12 (1 point)
one
two
infinite
none
5. x – 2y = 6
3x – 6y = 18 (1 point)
one
two
infinite
none
6. y – 5x = –6
3y – 15x = –12 (1 point)
one
two
infinite
none

Answer 1

his is solving system of equations right?

Answer 2

Yes.

Answer 3

3. x = –4y + 4
2x + 8y = 8

one
two
infinite
none

just solve for one variable first

x = –4y + 4 this is already solved for x
2x + 8y = 8

next substitute the variable

2 x + 8 y = 8
|
V
2 ( –4y + 4) + 8y = 8

Answer 4

-8y + 8 + 8y = 8 which ends up just 8 = 8

Answer 5

So its infinite..?

Answer 6

1

Answer 7

y = 6x + 2
3y – 18x = 12

this is already solved for y
so it is given