How do you solve the system #x+5y=4# and #3x+15y=-1# using substitution?
1 Answer
Mar 29, 2018
Lines are parallel so no intersection.
Explanation:
You have to rearrange one of the equations so that it is equal to x and y and then substitute it into the other equation
eq1
Substitute the whole equation into eq2 as
Solve for y
So the lines don't cross which means they are parallel