Answer:
b
Step-by-step explanation:
C) y= 7.5x-2
7.5 is a positive slope, and -2 will be your negative y intercept
y=mx+b
Remember m always means slope and b is always the y intercept!
Answer:
a.) 3.236 or -1.236
Step-by-step explanation:
Used an online calculator for this answer...
Using the Quadratic Formula where

The discriminant b^2−4ac > 0
so, there are two real roots.
Simplify the radical...

This simplifies to...

the common difference is two of course