A set of equations is given below:

Equation S: y = x + 9
Equation T: y = 2x + 1

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

x = 2x + 1
x + 9 = 2x
x + 1 = 2x + 9
x + 9 = 2x + 1

Question

A set of equations is given below: 

Equation S: y = x + 9 
Equation T: y = 2x + 1 

Which of the following steps can be used to find the solution to the set of equations?

 x = 2x + 1
 x + 9 = 2x
 x + 1 = 2x + 9
 x + 9 = 2x + 1

lynfran · Answer

equate them

anonymous · Answer

I know the answer but I can't explain. Sorry

lynfran · Answer

example
y=3x+1
y=5x+2
since both have y=to...
we equate them
3x+1=5x+2

lynfran · Answer

by doing that we can solve for the variable "x"

anonymous · Answer

by this you mean  x + 9 = 2x + 1? I was thinking its the last one because we have to you know equate them but i dont know how

lynfran · Answer

correct

anonymous · Answer

Ok thankyou for helping me

lynfran · Answer

welcome