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Lana71 [14]
4 years ago
15

Plz help i really need to get this right

Mathematics
2 answers:
tangare [24]4 years ago
8 0

Answer:

y = 2x

Step-by-step explanation:

Note the relationship between x and y, that is

x = - 42 → y = - 84 ← that is y = 2x

x = - 14 → y = - 28 ← that is y = 2x

x = 14 → y = 28 ← that is y = 2x

x = 42 → y = 84 ← that is y = 2x

Thus the linear equation is y = 2x

MrRa [10]4 years ago
5 0

Answer:

<h2>y = 2x</h2>

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

<em>m</em><em> - slope</em>

<em>b</em><em> - y-intercept</em>

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

From the table we have the points (14, 28) and (42, 84).

Substitute:

m=\dfrac{84-28}{42-14}=\dfrac{56}{28}=2

Put the val;ue of a slope and the coordinates of the point (14, 28) to the equation of a line:

28=2(14)+b

28=28+b    <em>subtract 28 from both sides</em>

28-28=28-28+b\\\\0=b\to b=0

Finally we have:

y=2x+0=2x

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