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  • 21-10-2020
  • Advanced Placement (AP)
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19. passes through (1, 4) and (-1, 1)

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Isa0811
Isa0811 Isa0811
  • 22-10-2020

Answer:

y = 3/2x + 2.5

Explanation:

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

So: [tex]\frac{1-4}{-1-1} = \frac{3}{2}[/tex]

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

[tex]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[/tex]

And finally turns into: [tex]y=\frac{3}{2} +2.5[/tex]

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