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y-y1(x-x1) y=5kx+3 y=9k(x-x1) y=4x+b
x-y-3=0 2x+y-3=0 x+y-1=0 2x-y-5=0
3y-y1=x-x1 y=3kx+b-2 y-y1=k(x-x1) y=ax -4
y-y1=k(x-x 1) y=5k x+3 y=9k(x-x 1) y=4x+ b
y-y1=k(x-x1) y=5kx+3 y=9k(x-x1) y=4x+b
y=3kx y=2kx+b y-y 1=k(x-x 1) y=ax+b
y-y 1=k(x-x 1) y=5kx+3 y =9k(x-x 1) y=4x+b
y-y l =k(X-X 1) y=5kx+3 Y=9k(x-x 1) y=4x+b
y-y1=k(x-x 1) y=kx+8 y=4kx y=ax+b
﹣6<k<﹣2 ﹣5<k<﹣3 k<﹣6 k>﹣2