Question #6407195Single Choice
Algebra-1
Question
Which of the following lines has an x-intercept of -2 and is parallel to y = 4x + 7?
Options
A
B
C
D
Answer & Analysis
Answer
B
Analysis
To determine which line has an x-intercept of -2 and is parallel to y = 4x + 7, we need to analyze the equations and consider the slope-intercept form, y = mx + b, where m represents the slope and b represents the y-intercept.
The given line has a slope of 4. Any line parallel to this line will also have a slope of 4.
To find the x-intercept of a line, we set y = 0 and solve for x.
Let's analyze the options:
A. y = 4x - 2
The slope of this line is 4, which is equal to the slope of y = 4x + 7. To find the x-intercept, we set y = 0:
The x-intercept is , not -2. Therefore, line A does not have an x-intercept of -2 and is not parallel to y = 4x + 7.
B. y = 4x + 8
The slope of this line is 4, which is equal to the slope of y = 4x + 7. To find the x-intercept, we set y = 0:
0 = 4x + 8
4x = -8
x = -2
The x-intercept is -2, which satisfies the condition. Therefore, line B has an x-intercept of -2 and is parallel to y = 4x + 7.
C.
The given line has a slope of 4. Any line parallel to this line will also have a slope of 4.
To find the x-intercept of a line, we set y = 0 and solve for x.
Let's analyze the options:
A. y = 4x - 2
The slope of this line is 4, which is equal to the slope of y = 4x + 7. To find the x-intercept, we set y = 0:
The x-intercept is , not -2. Therefore, line A does not have an x-intercept of -2 and is not parallel to y = 4x + 7.
B. y = 4x + 8
The slope of this line is 4, which is equal to the slope of y = 4x + 7. To find the x-intercept, we set y = 0:
0 = 4x + 8
4x = -8
x = -2
The x-intercept is -2, which satisfies the condition. Therefore, line B has an x-intercept of -2 and is parallel to y = 4x + 7.
C.
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