Questions: A line passes through the point (-3,4) and has a slope of -5.
Find an equation of this line.
y=-5x-3
y=-3x-5
y=-5x-11
y=-3x+4
Transcript text: https://app.sophia.org/spcc/college-algebra-22-mi
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UNIT 3 - MILESTONE 3
Question 10
A line passes through the point $(-3,4)$ and has a slope of -5 .
Find an equation of this line.
$y=-5 x-3$
$y=-3 x-5$
$y=-5 x-11$
$y=-3 x+4$
SAVE \& CONTINUE
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Solution
Solution Steps
To find the equation of a line given a point \((-3, 4)\) and a slope of \(-5\), we can use the point-slope form of the equation of a line, which is \(y - y_1 = m(x - x_1)\). Here, \((x_1, y_1)\) is the given point and \(m\) is the slope. We will then simplify this equation to the slope-intercept form \(y = mx + b\).
Step 1: Identify the Given Information
We are given a point \((-3, 4)\) and a slope \(m = -5\).
Step 2: Use the Point-Slope Form
We will use the point-slope form of the equation of a line, which is given by:
\[
y - y_1 = m(x - x_1)
\]
Substituting the values:
\[
y - 4 = -5(x + 3)
\]
Step 3: Simplify to Slope-Intercept Form
Expanding and simplifying the equation:
\[
y - 4 = -5x - 15
\]
Adding \(4\) to both sides:
\[
y = -5x - 11
\]
Final Answer
The equation of the line is \(\boxed{y = -5x - 11}\).