How many solutions does the system have?

x = -4y + 4
2x + 8y = 8

Question

How many solutions does the system have?

x = -4y + 4
 2x + 8y = 8

solomonzelman · Answer

in the second equation

1)  subtract 8y from both sides
2)  divide both sides by 2

you will see that the second equation is a multiple of the other.

hba · Answer

1 -4 4
2  8  -8

1 -4 4

0   16 0

so 

y=0 and x=4

solomonzelman · Answer

wow dude !!
 
$\Large\color{blue}{ \bf    x = -4y + 4 }$
$\Large\color{blue}{ \bf     2x + 8y = 8 }$

$\Large\color{blue}{ \bf    x = -4y + 4 }$
$\Large\color{blue}{ \bf     2x =- 8y + 8 }$

$\Large\color{blue}{ \bf    x = -4y + 4 }$
$\Large\color{blue}{ \bf     x =- 4y + 4 }$

anonymous · Answer

yall have totally confused the blonde.. lol]

solomonzelman · Answer

So do you now know why there can be infinite number of solutions ?

anonymous · Answer

yes ty

solomonzelman · Answer

Anytime !