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What is the equation?

What is the equation?-example-1
User SaloGala
by
8.2k points

1 Answer

5 votes

Answer:

The equation is y =
(1)/(2) x + 4

Explanation:

The slope-intercept 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 of a line is
m=(y2-y1)/(x2-x1) , where

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

To find the equation that represents the given table choose two ordered pairs from it

∵ Points (4, 6) and (6, 7) are from the table

x1 = 4 and y1 = 6

x2 = 6 and y2 = 7

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


m=(7-6)/(y6-4)=(1)/(2)

∴ m =
(1)/(2)

→ Substitute it in the form of the equation above

∴ y =
(1)/(2) x + b

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

of any points from the table

∵ x = 4 and y = 6

∴ 6 =
(1)/(2) (4) + b

∴ 6 = 2 + b

→ Subtract 2 from both sides

∴ 6 - 2 = 2 - 2 + b

4 = b

→ Substitute its value in the equation above

∴ y =
(1)/(2) x + 4

The equation is y =
(1)/(2) x + 4

User Jason Sparks
by
8.3k points

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