Question

Don't Want Answer!!! Just want someone to help me, explain how to figure this out.

How many solutions does the system of inequalities have?
x-4y=12 and 5x-20y=60

a.one
b.two
c.infinetley many
d. none

Answer 1

Question: they are equalities, right?

Answer 2

oh no, I put inequalities!!! Sorry I meant to put equations! @Loser66

Answer 3

x-4y =12
5x-20y =60
right?

Answer 4

yes

Answer 5

divide the second equation by 5 , what do you have?

Answer 6

x-4y=12?

Answer 7

exactly the first one, right?

Answer 8

yes

Answer 9

so, if (x1,y1) is the solution for the first one, it is the solution for the second one, too, right?

Answer 10

yes, so the answer would be one solution?

Answer 11

not yet!!

Answer 12

if (x2,y2) is the solution for the first one, it is the solution for the second one, too
if (x3,y3)-----------------------------------------------------------
if (x4,y4)-----------------------------------------------------------
and so on
that means : any solution of the first one is the solution of the second one
and to the first one, it has infinite solution ---> the answer is ?????

Answer 13

infinetely many?

Answer 14

you got it by yourself, I don't answer it, right??? CONGRAT

Answer 15

Oh my goodness. Thank you so much! I'm really bad at doing this and you just explained how to do it perfectly! c: