Answer:
y- intercept = - 7
Explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
given
x - y = 7 ( subtract x from both sides )
- y = - x + 7 ( multiply through by - 1 )
y = x - 7 ← in slope- intercept form
with y- intercept c = - 7