Question

Work out the equation of the line passing through (0, -1) and parallel to the line y = 2x + 4.

Answer 1

Y=2x-1

Explanation:

(0,-1) parallel to y=2x + 4

parallel means the slope is the same (i.e m=2)

general equation would be

y=2x+k

now (0,-1) belongs to line where x=0 and y= -1

-1 =2(0)+k

-1 = k

hence k is -1

the equation is y=2x-1