Answer:
Parallel lines
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = x + 3 ← is in slope- intercept form
with slope m = 1
- x + y = 7 ( add x to both sides )
y = x + 7 ← in slope- intercept form
with slope m = 1
Parallel lines have equal slopes, thus the lines are parallel
