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juin [17]
4 years ago
7

19. passes through (1, 4) and (-1, 1)

Advanced Placement (AP)
1 answer:
djyliett [7]4 years ago
6 0

Answer:

y = 3/2x + 2.5

Explanation:

You can use the slope equation: \frac{y_1-y_2}{x_1-x_2} = \frac{rise}{run}

So: \frac{1-4}{-1-1} = \frac{3}{2}

Then just plug in the one of the original points to find the y-intercept:

4 = \frac{3}{2} (1)+b\\4=\frac{3}{2} +b\\4=1.5+b\\(-1.5)+4=1.5+b+(-1.5)\\2.5=b

And finally turns into: y=\frac{3}{2} +2.5

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