Question #28ac8
1 Answer
Feb 15, 2017
The two lines described by the equations cross at (1, 2)
Explanation:
Assuming the question asks to find where the two lines cross
or to find a common solution for the two equations
Using subtraction
Equation 1
Equation 2
Multiply equation 1 by a factor of 2 to give equation 3
Subtract equation 3 from equation 2
Simplify
Substitute 1 for x in equation 1
simplify
Therefore the two lines described by the equations cross at (1, 2)