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pickupchik [31]
3 years ago
6

Write the equation of the line that contains the points (4, −7) and (1, 5). The slope of the line that contains the points (4, −

7) and (1, 5) is .
Mathematics
2 answers:
aleksley [76]3 years ago
5 0

Answer:  Equation of line = y=-4x+9

The slope of the line that contains the points (4, −7) and (1, 5) is -4 .

Step-by-step explanation:

The slope of a line that contains two points (a,b) and (c,d) is given by :-

m=\dfrac{d-b}{c-a}

The slope of a line passing through (4, −7) and (1, 5) will be:_

m=\dfrac{5-(-7)}{1-4}\\\\\Rightarrow\ m=\dfrac{5+7}{-3}\\\\\Rightarrow\ m=\dfrac{12}{-3}\\\\\Rightarrow\ m=-4

The equation of a line passing through (a,b) and has slope m is given by :_

(y-b)=m(x-a)

Then , the equation passing through (1,5) and has slope -4 will be

(y-5)=-4(x-1)\\\\\Rightarrow\ y-5=-4x+4\\\\\Rightarrow\ y=-4x+4+5\\\\\Rightarrow\ y=-4x+9

Hence, the equation of line = y=-4x+9

The slope of the line that contains the points (4, −7) and (1, 5) is -4.

deff fn [24]3 years ago
4 0
Slope = (5+7)/(1-4) = 12/-3 = -4

slope = -4

y = mx + b
-7 = -4(4) + b
-7 = -16 + b
b = 9

equation
y = -4x + 9
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