Answer:
Answer is in the attachment..............
Step-by-step explanation:
10
random words to fill up 20 character minimum for answering questions :P

<h2>The expression is not factorable with rational numbers.</h2>
Y=-x+8
gradient of the parallel line is the same as the gradient of the line given, which is -1
to find the y-intercept, sub the values (9,-1) into the equation we are finding which is y=-x+c