Question

help with math
x+y=(-4)
y=4x+1

Answer 1

Ok so do you know how to start this off?

Answer 2

no

Answer 3

Ok so we are gonna solve it using substitution

Rewrite your equation:

\[y=4x+1;x+y=4\]

Answer 4

ok

Answer 5

Then you are going to solve for y:

\[Substitute:4x+1\] for y in
\[x+y=4\]

Answer 6

\[x+y=4\]\[x+4x+1=4\]\[5x+1=4\]\[5x+1+1=4+1\]\[5x=-5\]\[\frac{5x }{ 5 }=\frac{ -5 }{ 5 }\] Which means x equals what ?

Answer 7

1

Answer 8

i mean -1

Answer 9

\(\color{#0cbb34}{\text{Originally Posted by}}\) @zunairah
1
\(\color{#0cbb34}{\text{End of Quote}}\)
Correct now you have to solve for y aswell correct?

Answer 10

yes

Answer 11

Ok so now that we have x= -1 we will start on y

Substitute -1 for x in y=4x+1

\[y=4x+1\]\[y=(4)(-1)+1\]
Now if you simplify both sides of the equations then y should equal?

Answer 12

-3

Answer 13

thx