Answer:

Step-by-step explanation:
Factorise in order to reveal factors.

Lines b and c
they both go up 2 and over 1 (rise over run is slope)
The slope is rise over run, how many times you go up (or if down it'd be a negative) and over.
The y-intercept is what point on the y axis the line passes through
Answer:
the second one
Step-by-step explanation:
it does not say that both sides are parallel
Answer:
This is actually a reduction, and the scale factor of this dilation is 0.5.