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jahnoibenjamin
02.06.2020 •
Mathematics
Write an equation of the line that passes through (2,−3) and is perpendicular to the line y=−2x−3.
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Ответ:
An equation of the line that passes through points (2,−3) and is perpendicular to the line is equal to![y=\frac{1}{2} x-4](/tpl/images/0673/8488/e400c.png)
Given the following equation:
First of all, we would determine the slope of the given equation:
Slope,
= -2
In Mathematics, the slopes of two lines are said to be perpendicular when the product of these slopes is equal to negative one (-1).
Mathematically, this is given by;
Substituting the value of
, we have:
The standard form of an equation of line is given by the formula;
Where:
x and y are the points.m is the slope.Substituting the points into the formula, we have;
Read more: link
Ответ:
y =
x - 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - 2x - 3 ← is in slope- intercept form
with slope m = - 2
Given a line with slope m then the slope of a line perpendicular to it is
y =
x + c ← is the partial equation
To find c substitute (2, - 3) into the partial equation
- 3 = 1 + c ⇒ c = - 3 - 1 = - 4
y =
x - 4 ← equation of perpendicular line
Ответ:
She plays 5 new songs for every 2 old ones.
If she plays 15 new songs, she will play 6 old songs.
15 + 6 = 21
thus, she played 21 songs altogether.