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2 years ago

The slope and a point on a line are given. Use the information to locate three additional points on the line.

Mathematics

2 answers:

Vsevolod [243]2 years ago

8 0

C is the right answer , the equation of the line y=-4x-7

TiliK225 [7]2 years ago

6 0

Answer:

Step-by-step explanation:

the typical form of line equation is

y = ax + b

a = the slope of the line (expressed as y/x ratio telling us how many units y changes when x changes a certain number of units).

b = the intercept on the y-axis (when x = 0).

we know, a = -4

and we use the point (x = -2, y = 1) to get b

y = -4x + b

1 = -4×-2 + b = 8 + b

b = -7

y = -4x - 7

only the points of option C are all fulfilling this equation.

e.g. x = 0, y = -7

-7 = -4×0 - 7 = -7, true, -7 = -7

and so on.

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2) $df = c-1 = 2-1$

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Step-by-step explanation:

Previous concepts

A chi-square goodness of fit test "determines if a sample data matches a population".

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