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lorasvet [3.4K]
3 years ago
11

Find the intersection of the line through (0, 1) and (4.3, 2) and the line through (2.1, 3) and (5.3, 0).

Mathematics
1 answer:
ehidna [41]3 years ago
5 0

Answer: The intersection of the line through (0, 1) and (4.3, 2) and the line through (2.1, 3) and (5.3, 0) is (3.392, 1.789).

Step-by-step explanation:

We know that the equation of a line that passes through two points (a,b) and (c,d) is given by :-

(y-b)=\dfrac{d-b}{c-a}(x-a)

Similarly , the equation of line that passes through (0, 1) and (4.3, 2)  would  be:

(y-1)=\dfrac{2-1}{4.3-0}(x-0)

(y-1)=\dfrac{1}{4.3-}(x)

4.3(y-1)=x

4.3y-4.3=x-----(1)

Equation of line that passes through (2.1, 3) and (5.3, 0) would  be:

(y-0)=\dfrac{3-0}{2.1-5.3}(x-5.3)

y=\dfrac{3(x-5.3)}{-3.2}-----(2)

To find the intersection point (x,y) , we substitute the value of y from (2)in (1) , we get

4.3(\dfrac{3(x-5.3)}{-3.2})-4.3=x

-4.03125(x-5.3)-4.3=x

-4.03125x+21.365625-4.3=x

-4.03125x+17.065625=x

x+4.03125x=17.065625

5.03125x=17.065625

x=\dfrac{17.065625}{5.03125}\approx3.392

Put value of x in (2) , we get

y=\dfrac{3(3.392-5.3)}{-3.2}

y=\dfrac{3(-1.908)}{-3.2}\approx1.789

Hence, the intersection of the line through (0, 1) and (4.3, 2) and the line through (2.1, 3) and (5.3, 0) is (3.392, 1.789).

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