Question

Equation A: y = x + 1
Equation B: y = 4x + 5

Which of the following steps can be used to find the solution to the set of equations?

x + 1 = 4x + 5
x = 4x + 5
x + 1 = 4x
x + 5 = 4x + 1

Answer 1

which one do you think?
you substitute the the first equation into the second equation

Answer 2

in the first equation, y = x + 1
substitute that value for y in the second equation
tell me what you get @automaticloveletter

Answer 3

5 = y-4x? (I'm using a calculator) :/

Answer 4

no need for a calculator

Answer 5

look the value of y in the first equation is x + 1 correct?

Answer 6

yes

Answer 7

so when you substitute it into the second equation, you put x + 1 instead of y

Answer 8

wait so it's just 4*1+5?

Answer 9

no you're not getting it....
y = x + 1 in the first equation
second equation
y = 4x + 5
put x + 1 instead of y in the second equation
you get:
x + 1 = 4x + 5

Answer 10

ohhh

Answer 11

you just substitute the value in the first equation into the second
they're not asking you to solve it

Answer 12

I know that, but I'd also want to know how to solve it for other questions..

Answer 13

How you would solve for it:
\(x + 1 = 4x + 5\\1 = 3x + 5\\-4=3x\\ -\dfrac{4}{3}=x\)

Answer 14

@automaticloveletter