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What is the equation of the line that is parallel to the line [tex][tex]$y-1=4(x+3)$[/tex][/tex] and passes through the point [tex][tex]$(4,32)$[/tex][/tex]?

A. [tex]y=-\frac{1}{4} x+33[/tex]
B. [tex]y=-\frac{1}{4} x+36[/tex]
C. [tex]y=4 x-16[/tex]
D. [tex]y=4 x+16[/tex]


Sagot :

To find the equation of the line that is parallel to the line [tex]\( y - 1 = 4(x + 3) \)[/tex] and passes through the point [tex]\( (4, 32) \)[/tex], follow these steps:

1. Identify the slope of the given line. The equation [tex]\( y - 1 = 4(x + 3) \)[/tex] is in point-slope form, [tex]\( y - y_1 = m(x - x_1) \)[/tex], where [tex]\( m \)[/tex] represents the slope.
[tex]\[ y - 1 = 4(x + 3) \][/tex]
The slope [tex]\( m \)[/tex] here is 4.

2. Since the line we are seeking is parallel to the given line, it will have the same slope, which is [tex]\( m = 4 \)[/tex].

3. Use the point-slope form to find the equation of the new line using the slope [tex]\( m = 4 \)[/tex] and the point [tex]\( (4, 32) \)[/tex]:
[tex]\[ y - y_1 = m(x - x_1) \][/tex]
Substituting the point [tex]\((4, 32)\)[/tex] and the slope [tex]\( m = 4 \)[/tex]:
[tex]\[ y - 32 = 4(x - 4) \][/tex]

4. Distribute the slope on the right-hand side of the equation:
[tex]\[ y - 32 = 4x - 16 \][/tex]

5. Solve for [tex]\( y \)[/tex] to convert the equation to slope-intercept form [tex]\( y = mx + b \)[/tex]:
[tex]\[ y - 32 = 4x - 16 \][/tex]
Add 32 to both sides:
[tex]\[ y = 4x - 16 + 32 \][/tex]
Simplify:
[tex]\[ y = 4x + 16 \][/tex]

Thus, the equation of the line that is parallel to [tex]\( y - 1 = 4(x + 3) \)[/tex] and passes through the point [tex]\( (4, 32) \)[/tex] is:
[tex]\[ y = 4x + 16 \][/tex]

Therefore, the correct answer is:
[tex]\[ \boxed{y = 4x + 16} \][/tex]