Question
What is an equation of the line that passes through the point (-4,-7) and is perpendicular to the line x+2y=4 Answer Attempt 1 out of 2 square
Solution
4.3
(178 Votos)
Amanda
Profissional · Tutor por 6 anos
Resposta
The equation of the line that passes through the point \((-4,-7)\) and is perpendicular to the line
is
.
Explicação
## Step 1The given line is
. We can rewrite this in slope-intercept form
, where
is the slope and
is the y-intercept. ###
can be rewritten as
So, the slope of the given line is
.## Step 2The slope of a line perpendicular to a given line is the negative reciprocal of the slope of the given line. ### The negative reciprocal of
is
.So, the slope of the line perpendicular to the given line is
.## Step 3We know that the line passes through the point \((-4,-7)\). We can use the point-slope form of a line equation, \(y - y_1 = m(x - x_1)\), where \((x_1, y_1)\) is a point on the line and
is the slope.### Substituting
and \((x_1, y_1) = (-4,-7)\) into the equation, we get \(y - (-7) = 2(x - (-4))\).## Step 4Simplify the equation to get the final equation of the line.### \(y + 7 = 2(x + 4)\) simplifies to
.