Question

A line passes through (2,8) and (4,12). Which equation Best represents the line

Answer 1

y = 2x + 4

Explanation:

First, find the rate of change [slope], m = -y₁ + y₂\-x₁ + x₂. Next, you do either\or:

12 = 2(4) + b; 4 = b

8 = 2(2) + b; 4 = b

No matter which ordered pair you use, you will ALWAYS get the same answer, IF you put them in their correct places.

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