Question

answer for brainliest
Which is an equation of the line through (-1, -4) and parallel to 3x+y=5
a) y= 3x + 1
b) y= -3x - 7
c) y= -3x + 7
d) y= 3x - 1

Answer 1

Answer:

B

Step-by-step explanation:

Rearrange 3x+y=5 to y = -3x + 5 to see the gradient is -3. If they are parallel the gradient must be the same, so it is either b or c.

We check B to see if it passes through (-1, -4) by substituting in -1 for x:

-3(-1)-7 = 3 - 7 = -4, the y value, so it is B.