What does 'b" represent in y=mx + b
A-Macaroni
B- y-intercept
C- nothing
D- Slope ​

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

3x + 4y = 5 x- 3y = -7 solve by substitution

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.