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A group of hikers is progressing steadily along an uphill trail. The graph shows their elevation (or height above sea level), in feet, at each distance from the start of the trail, in miles.

A group of hikers is progressing steadily along an uphill trail The graph shows their elevation or height above sea level in feet at each distance from the star class=

Respuesta :

alexandrapassas

Answer:

-2

Step-by-step explanation:

Y=500+250x

fichoh

The graph shows the linear relationship between Elevation in feet and distance along trail in miles.

  • Intercept = 500 feets
  • Slope = 250 (positive)
  • y = 500 + 250x

  • The intercept is the point where the regression line intersects the y - axis.

  • From the graph, the intersect is 500 feets

  • From the graph, the slope is positive, as elevation increases with distance.

  • The slope = Rise ÷ Run

  • Slope = (2500 - 500) ÷ (8 - 0)

  • Slope = 2000 ÷ 8

  • Slope = 250

The regression equation written in the form :

  • y = a + bx
  • a = intercept ; b = slope
  • y = 500 + 250x

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