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dexar [7]
3 years ago
9

Use the 2 highlighted points to find the equation of a trend line in slope intercept form

Mathematics
2 answers:
ahrayia [7]3 years ago
7 0
Use rise over run to find the answer
Dominik [7]3 years ago
3 0

Answer:

The slope intercept form of trend line is y=200x-399000.

Step-by-step explanation:

The slope intercept form of a line is

y=mx+b

Where, m is slope and b is y-intercept.

The coordinates of highlighted points are (2000,1000) and (2012,3400).

If a line passes through two points then the slope of the line is

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

The slope of the trend line is

m=\frac{3400-1000}{2012-2000}

m=\frac{2400}{12}=200

The slope of the line is 200.

Point slope form of a line is

y-y_1=m(x-x_1)

The slope of the trend line is 200 and it passes through (2000,1000). So, the equation of trend line is

y-1000=200(x-2000)

y-1000=200x-400000

Add 1000 on both the sides.

y-1000+1000=200x-400000+1000

y=200x-399000

The slope of the line is 200 and y-intercept is -399000.

Therefore the slope intercept form of trend line is y=200x-399000.

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2 years ago
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3 years ago
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If y varies directly as x and y = 24 when<br> x= 16, what is y when x = 50?
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Answer:

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Step-by-step explanation:

Given

y\ \alpha\ \ x

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Required

Find y when x = 50

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y\ \alpha\ \ x

Express as equation

y = kx

Solve for k

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