Answer:
Both be positive or both be negative
Step-by-step explanation:
Both be positive or both be negative
+ *+ = +
- * - = +
Answer:
f = 
Step-by-step explanation:
multiply both sides by 4fk to eliminate the fraction
4Dfk = 1
isolate f by dividing both sides by 4Dk
f =
a) What is the slope of the line parallel to it?
Parallel lines will never intersect, meaning they have equivalent slopes, so the answer to this part is -(6/5).
b) What is the slope of the line perpendicular to it?
Perpendicular lines will intersect, creating a 90-degree angle, meaning all values in the graphs have been flipped. Thus, the slope of any perpendicular line is the negative reciprocal of the given slope (-1/x). The negative reciprocal of -(6/5) is 5/6, so that is the answer.
D, it increases then goes at a constant speed
