Question

Whats x and y if
Y= x?
and if
Y=2x-4?
PLEASE HELLPP

Answer 1

Since y = x, you can replace the y in y = 2x -4 to make:

x = 2x -4 ....which is an equation in one variable. Can you finish this off and solve for x?

Answer 2

Y=2x-4
Y=2Y-4
-Y=4
Y=4
since x=y therefore x=4 just like y=4

Answer 3

thank you. i just moved schools and missed a chunk of math which was slope everything so iv been pretty confused

Answer 4

Do you understand what I did?

Answer 5

Yes i got it! Now i need to graph it.. cause its solve each system of equations by graphing

Answer 6

well you know that x=y
x=y looks like this

Answer 7

where (x,y) and x=y
so the coordinates can be
(-111,-111) (2,2) (4,4) -7,-7) as long as x=y you get the idea...