Questions: What is the equation of the following line? Be sure to scroll down first to see all answer options.
A. y=15 x
B. y=5 x
C. y=1/5 x
D. y=-5 x
E. y=-1/5 x
F. y=3 x
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1.3.3 Quiz: Patterns and Lines
Question 10 of 10
What is the equation of the following line? Be sure to scroll down first to see all answer options.
A. $y=15 x$
B. $y=5 x$
c. $y=\frac{1}{5} x$
D. $y=-5 x$
E. $y=-\frac{1}{5} x$
F. $y=3 x$
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Solution
Solution Steps
Step 1: Identify the given points
The given points on the line are (0, 0) and (15, 3).
Step 2: Calculate the slope
The slope \( m \) of a line passing through two points \((x_1, y_1)\) and \((x_2, y_2)\) is given by:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
Substituting the given points (0, 0) and (15, 3):
\[ m = \frac{3 - 0}{15 - 0} = \frac{3}{15} = \frac{1}{5} \]
Step 3: Write the equation of the line
The equation of a line in slope-intercept form is:
\[ y = mx + b \]
Since the line passes through the origin (0, 0), the y-intercept \( b \) is 0. Therefore, the equation is:
\[ y = \frac{1}{5}x \]