Question Details

Determine the equation of the straight line parallel to y=3x-4 that passes through the coordinates (1, 5).

Options

A

y=3x+2

B

y=-3x+8

C

y=3x-2

D

y=3x+8

Show Answer

Correct Answer :

Option A

y=3x+2

y = -2x + 3

Solution :

The correct option is:
y=3x+2

Step 1: Determine the slope of the given line.

The standard slope-intercept form of a straight line is given by:

y=mx+c

where m represents the slope and c represents the y-intercept.

Comparing the given line equation y=3x-4 with the slope-intercept form, the slope of the given line is:

m=3

Step 2: Apply the condition for parallel lines.

Parallel lines have identical slopes. Therefore, the required line parallel to y=3x-4 will also have a slope of:

m=3

Step 3: Find the equation of the line using the point-slope form.

The point-slope form of a line passing through a point (x1,y1) with slope m is:

y-y1=m(x-x1)

Substitute the slope m=3 and the coordinates (x1,y1)=(1,5) into the formula:

y-5=3(x-1)

Expand the right side of the equation:

y-5=3x-3

Add 5 to both sides to solve for y:

y=3x-3+5

y=3x+2

Thus, the equation of the straight line parallel to y=3x-4 passing through (1, 5) is:
y=3x+2

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