Which of the following is a chemical that produces vapors that, when inhaled through sniffing or huffing, can cause hallucinations, as well as create intoxicating and euphoric effects? A. Opium
B. Codeine
C. Heroin
D. Inhalant

So for this, we will be putting the equation in slope-intercept form, which is , with m = slope and b = y-intercept (aka the point in which the line crosses the y-axis)

Since it's stated that -2 is our slope, this means that -2 is the m variable.

Since it's also stated that the y-intercept is (0,3), 3 is our b variable.

Putting our equation together, it's