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Aleksandr-060686 [28]
3 years ago
12

Find an equation of the line passing through the point (-1,8) and parallel to the line joining the points (-3,4) (4,-1).

Mathematics
1 answer:
bulgar [2K]3 years ago
5 0

Answer:

The equation of the line will be 7y=(-5x)+51

Step-by-step explanation:

If a line passes through two points (x,y) and (x',y') then slope of the line will be = \frac{y-y'}{x-x'}

Now we know the points are (-3,4) and (4,-1) then the slope of the line will be =\frac{4-(-1)}{(-3-4)}=\frac{5}{(-7)} =(-\frac{5}{7})

We know that two parallel lines have the same slope then a line which is passing through a point (-1,8)will be =( -\frac{5}{7})

Let the equation of the line is y=mx+c

Then by putting the value of x,y and m we can get the value of c.

8=(-\frac{5}{7})+c

c=8-\frac{5}{7} \\c=\frac{56-5}{7} =\frac{51}{7}

Then equation will be y=(-\frac{5}{7})x+\frac{51}{7}

7y=(-5x)+51


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