Question

WILL FAN AND MEDAL

A set of equations is given below:

Equation H: y = −x + 2
Equation J: y = 3x − 4

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

a.−x = 3x − 4

b.−x +2 = 3x

c.−x + 2 = 3x − 4

d.−x + 1 = 3x + 2

Answer 1

Hint: if y = some expression in x and y also = another expression in x then these 2 expressions are equal to each other.

Answer 2

I'm lost. What do you mean?

Answer 3

a simple case:-

if y = a
and
y = b

then a = b because they are both equal to y

Answer 4

Ok. But how does that explain this problem?

Answer 5

well look at the question y = 2 different things right - the 2 equations have 2 different expressions of x equal to y.
now check out the options to see if these 2 expressions have an '=' between them

Answer 6

I guess, to be honest I'm just very confused about this whole system and was wondering if somebody could take me through the steps

Answer 7

well there only one step
- refer back to y = a and y = b

instead a theres -x + 2 and instead of b there is what?
and these are equal

Answer 8

b would be 3x = -4?

Answer 9

no 3x - 4

Answer 10

Right, sorry that's what i meant

Answer 11

ok so the next step is to put these equal

Answer 12

look through the options to see which one does that

Answer 13

So it would be C.?

Answer 14

yes

Answer 15

y = -x + 2
y = 3x - 4

therefor

-x + 2 = 3x - 4

Answer 16

Thank you!!!!!!!!!!

Answer 17

get it?

Answer 18

yw