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Liono4ka [1.6K]
3 years ago
13

Use the points (2, 14) and (10, 22) to write the equation of the line of best fit shown

Mathematics
1 answer:
luda_lava [24]3 years ago
8 0

Answer:

The equation of the line best fit is y = x + 12

Step-by-step explanation:

The form of the linear equation is y = m x + b, where

  • m is the slope of the line
  • b is the y-intercept

The rule of the slope is m = \frac{y2-y1}{x2-x1} , where

  • (x1, y1) and (x2, y2) are two points on the line

∵ The line passes through points (2, 14) and (10, 22)

∴ x1 = 2 and y1 = 14

∴ x2 = 10 and y2 = 22

→ Substitute them in the rule of the slope above to find it

∵ m = \frac{22-14}{10-2}=\frac{8}{8}=1

∴ m = 1

→ Substitute it in the form of the equation above

∴ y = (1)x + b

∴ y = x + b

→ To find b substitute x by 2 and y by 14 in the equation

∵ 14 = 2 + b

→ Subtract 2 from both sides

∴ 14 - 2 = 2 - 2 + b

∴ 12 = b

→ Substitute it in the equation

∴ y = x + 12

∴ The equation of the line best fit is y = x + 12

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