please help!!
y = x and y + x = 5

a. (-4,1)
b. (1,4)
c. (-3,2)
d. (2,3)

Question

please help!!
y = x and y + x = 5

a. (-4,1)
b. (1,4)
c. (-3,2)
d. (2,3)

ipwnbunnies · Answer

Err, none of the above? Check out y = x. That means the two numbers in (X,Y) have to be equal to each other, at least.

Another thing is to give us some more instructions.

anonymous · Answer

it just says find the solution to the system of equations by using either graphing or substitution .

ipwnbunnies · Answer

Hmm, did you write the answer choices out correctly? None of these would work.

anonymous · Answer

i forget something in the problem. it is
y = 4x and y + x = 5

ipwnbunnies · Answer

Ahh ok. So this one is easy. We already have a lone variable equal to something: 
y=4x.

ipwnbunnies · Answer

We're gonna use substitution for this one. Plug in '4x' where you see 'y' in the second equation.

anonymous · Answer

4x + x = 5 ?

accessdenied · Answer

Yup.  Now you can combine like terms and solve for x.

The resulting x-value will then be able to be used to solve for y in either equation (just by plugging it back in)