The answer is:put the equation xa+yb=1 to the slope intercept form and find its slope and y-intercept.
-22 - x = 5 + 6x + 9 Combine like terms (5 and 9)
-22 - x = 14 + 6x Subtract 6x from both sides
-22 - 7x = 14 Add 22 to both sides
-7x = 36 Divide both sides by -7
x = 5
Your answer would turn out to be Shelby goes out her front door turns West and walks past the other three houses.
The answer is infinitely many solutions.
If you graph them both are a straight line which means they are infinite