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san4es73 [151]
4 years ago
7

The coordinates of three points on a straight line are listed in the table. What is the function rule that describes the linear

relationship between these x and y values?

Mathematics
1 answer:
JulijaS [17]4 years ago
5 0

Answer:

y = x - 8

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (10, 2) and (x₂, y₂ ) = (12, 4) ← 2 ordered pairs from the table

m = \frac{4-2}{12-10} = \frac{2}{2} = 1

From the graph the line crosses the y- axis at - 8 ⇒ c = - 8

y = x - 8 ← is the equation

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