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Nastasia [14]
3 years ago
15

Write the equation of a vertical line that passes through the point (3, -3)

Mathematics
2 answers:
lianna [129]3 years ago
4 0
Hello 
<span>the equation of a vertical line that passes through the point (3, -3) is : x = 3 </span>
bazaltina [42]3 years ago
4 0

Answer:

The equation of a vertical line that passes through the point (3,-3) is

x=3

Step-by-step explanation:

The equation of a generic line is :

y=ax+b (I)

Where ''a'' and ''b'' are real numbers.

The horizontal and vertical lines are particular cases of the equation (I).

If ''x'' is equal to 0 ⇒

y=a.(0)+b\\y=b

Where ''b'' is still a real number. The equation y=b gives us the family of all horizontal lines which cut the y-axis in the point (0,b)

Now, if ''y'' is equal to 0 ⇒

0=ax+b

ax=-b

x=\frac{-b}{a}

If we replace ''\frac{-b}{a}'' by ''c'' (where ''c'' is a real number), the equation x=c gives us the family of all vertical lines which cut the x-axis in the point (c,0).

If we want to write the equation of a vertical line we can write

x=c and then we will need to find the value of ''c''. Our line must passes through the point (3,-3). If the second coordinate is 0 then the vertical line will intersect the x-axis at (3,0) ⇒ It equation will be x=3

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