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19 June, 11:12

How many solutions does the following have?

Y = x - 1

&

y - x = - 9

+5
Answers (1)
  1. 19 June, 14:21
    0
    No solution

    Step-by-step explanation:

    y=x-1 and y-x=-9

    1st make sure both equations are in slope intercept form

    since the 2nd equation isn't, you change it by adding x to both sides and rewrite it as y=mx+b so

    y-x=-9

    + * + *

    y=*-9

    now you have y=x-1 and y=x-9

    substitute the y with the other equation

    x-1=x-9

    subtract x from both sides since you can't have the variable on both sides

    now you've got - 1 = - 9

    and since that equation isn't true, it has no solution.
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