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Problem 15

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Problem 11

$9-14=$ Points on a Graph? Determine whether the given points

are on the graph of the equation.

$$

x-2 y-1=0 ; \quad(0,0),(1,0),(-1,-1)

$$

Answer

The first point is not on the graph

The second point is on the graph

The third point is on the graph

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## Discussion

## Video Transcript

for this item were asked to determine if these three points lie on the graph of the equations shown in turn. We will substitute the coordinates given into the equation. Do the math. Here we find that negative one is not equal. 000 is not in the graph. You continue will do one minus two. I'm zero minus one equal zero one minus one equals zero zero equals zero. Yes, the 0.10 is on the graph of the given equation. And finally, let's substitute in native one. Whoops. So just that negative one minus two times negative. One minus one. Does it equal zero native one plus two. Honest one equals zero gathered the negatives. Negatives too. Plus two equals zero zero equals zero. And again, we have a true statement. So we know that negative one negative one is on the graph of the given equation.

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