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Ymorist [56]
3 years ago
9

Line CD passes through points (0, 2) and (4, 6). Which equation represents line CD?. .a. y = 2x – 2. b.y = 2x + 2. c.y = x + 2.

d. y = x – 2
Mathematics
2 answers:
nika2105 [10]3 years ago
6 0

the equation for a line is y = m x  + b


using the first set of coordinates (0,2)
2 = m * 0 + b
b = 2

using the second set of coordinates (4,6)
6 = 4 m + 2
4 m = 4
m = 4 / 4
m = 1

 use those numbers into the line equation

y = x +2

Answer is C

madreJ [45]3 years ago
5 0

Answer:

The equation of line is y = x + 2 .

Option (c) is correct .

Step-by-step explanation:

The equation of line is represented by

(y-y_{1}) = \frac{(y_{2}-y_{1})}{x_{2}-x_{1}} (x-x_{1})

As given

Line CD passes through points (0, 2) and (4, 6).

(y-2) = \frac{(6-2)}{4-0}(x-0)

(y-2) = \frac{4}{4}(x-0)

y -2 = x

y = 2 + x

Therefore the equation of line is y = x + 2 .

Option (c) is correct .

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