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Determine the equation for the given line in slope-intercept form:

A. [tex]\( y = -\frac{5}{3} x - 1 \)[/tex]
B. [tex]\( y = 8x + 1 \)[/tex]
C. [tex]\( y = \frac{3}{5} x + 1 \)[/tex]
D. [tex]\( y = -3x - 1 \)[/tex]


Sagot :

To identify the given equation of a line, we first need to recognize the structure of a linear equation in slope-intercept form, which is given as:

[tex]\[ y = mx + b \][/tex]

where:
- [tex]\( m \)[/tex] is the slope of the line.
- [tex]\( b \)[/tex] is the y-intercept of the line.

Now, let's analyze each of the provided equations to determine their slopes ([tex]\( m \)[/tex]) and y-intercepts ([tex]\( b \)[/tex]).

1. Equation: [tex]\( y = -\frac{5}{3}x - 1 \)[/tex]
- Slope ( [tex]\( m \)[/tex] ): [tex]\(-\frac{5}{3}\)[/tex] (approximately [tex]\(-1.6667\)[/tex])
- Y-intercept ( [tex]\( b \)[/tex] ): [tex]\(-1\)[/tex]

2. Equation: [tex]\( y = 8x + 1 \)[/tex]
- Slope ( [tex]\( m \)[/tex] ): [tex]\(8\)[/tex]
- Y-intercept ( [tex]\( b \)[/tex] ): [tex]\(1\)[/tex]

3. Equation: [tex]\( y = \frac{3}{5}x + 1 \)[/tex]
- Slope ( [tex]\( m \)[/tex] ): [tex]\(\frac{3}{5}\)[/tex] (approximately [tex]\(0.6\)[/tex])
- Y-intercept ( [tex]\( b \)[/tex] ): [tex]\(1\)[/tex]

4. Equation: [tex]\( y = -3x - 1 \)[/tex]
- Slope ( [tex]\( m \)[/tex] ): [tex]\(-3\)[/tex]
- Y-intercept ( [tex]\( b \)[/tex] ): [tex]\(-1\)[/tex]

After identifying the slopes and y-intercepts of each equation, we can summarize the results for each equation:

1. [tex]\( y = -\frac{5}{3}x - 1 \)[/tex]:
- Slope = [tex]\(-1.6667\)[/tex]
- Y-intercept = [tex]\(-1\)[/tex]

2. [tex]\( y = 8x + 1 \)[/tex]:
- Slope = [tex]\(8\)[/tex]
- Y-intercept = [tex]\(1\)[/tex]

3. [tex]\( y = \frac{3}{5}x + 1 \)[/tex]:
- Slope = [tex]\(0.6\)[/tex]
- Y-intercept = [tex]\(1\)[/tex]

4. [tex]\( y = -3x - 1 \)[/tex]:
- Slope = [tex]\(-3\)[/tex]
- Y-intercept = [tex]\(-1\)[/tex]

Thus, all the equations have been correctly analyzed for their slope and intercept in the slope-intercept form.