The y-intercept of the line whose equation is x - y = -1 is

Question

anonymous · Answer

is it 1

myininaya · Answer

To find y-intercept, set x equal 0 and solve for y.

myininaya · Answer

Yep.

anonymous · Answer

help me with this  The line through (1, 0) and parallel to x - y = 7.

myininaya · Answer

You can find the slope of a line by putting the equation into y=mx+b form where m is the slope.
Can you arrange your equation x-y=7 into y=mx+b form?
The reason we want to do this is because lines that are parallel have the same slope.

anonymous · Answer

still confused

myininaya · Answer

Can you write x-y=7 into y=mx+b form?
Basically I'm asking you to solve x-y=7 for y.

***[isuru]*** · Answer

|dw:1381936850780:dw|
    so the slope of both graphs r equal..
 which mean the line parallel to x - y = 7 is somewhat something which looks like
               x - y = c   ( c = intercept)
now substitute the given coordinates  (1 , 0)
              x = 1  y = 0
               1 - 0 =  c
                     c =1 

so the function is..
              x - y = 1
                   y = x -1

got it ?