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27 votes
27 votes
Write an equation that represents the line.

Use exact numbers.

First point (1,2)
Second point is (4,4)

Write an equation that represents the line. Use exact numbers. First point (1,2) Second-example-1
User Gajen Sunthara
by
2.9k points

2 Answers

19 votes
19 votes
Find the slope using slope formula
Y2-y1 / x2-x1
4 - 2 / 4 - 1
2/3

Verify using diagram

Find equation using point slope form
Y-y1 = m(x - x1)
y - 2 = 2/3(x - 1)
y - 2 = 2/3x - 2/3
y - 6/3 = 2/3x - 2/3
y = 2/3x + 4/3

Verify by plugging in second coordinate

4 = 2/3*4 + 4/3
4 = 8/3 + 4/3
4 = 12/3
4 = 4
User Fixee
by
2.9k points
14 votes
14 votes

Answer: equation y= 3/2x+ 4/3

User Rickye
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2.3k points