The equation of a line is y = 2x + 3. What is the equation of the line that is parallel to the first line and passes through (2, –1)?
A.
4x – 2y = –6
B.
y = 2x – 5
C.
y = 3x + 4
D.
2x + y = –1

Question

The equation of a line is y = 2x + 3. What is the equation of the line that is parallel to the first line and passes through (2, –1)?
A.
4x – 2y = –6
B.
y = 2x – 5
C.
y = 3x + 4
D.
2x + y = –1

anonymous · Answer

@thomaster

anonymous · Answer

@Jamierox4ev3r

samgrace · Answer

B.

Using point (2,-1) with the same gradient as the first equation (as they're parallel). Then plug into formula

y - y1 = m(x - x1)

samgrace · Answer

y - (-1) = 2 (x -2) 

y + 1 = 2x - 4 ==> y = 2x - 5

anonymous · Answer

can you help me with another one? @samgrace

samgrace · Answer

Yes

anonymous · Answer

The graph of which of the following will be parallel to the graph of 4x – 3y = –12?