Inequalities will have a <, >, <=, =>, = or will be worded as "Less than", "greater than", etc.
Equations must have mathematical functions and equal sign.
15=3x is an equation since 3x = 3*x
Finally, expressions are mathematical functions that have no equal signs.
Answer:
(C) 
Step-by-step explanation:
Y=6x+(1/2)
y=mx+b
m is slope
b is y-intercept so you just plug in the values
