Answer:
Step-by-step explanation:
GIVEN: On a 
question test students gain 
points for each correct answer and lose 
points on each incorrect answer. If everyone required to give an answer to each question.
TO FIND: the formulas that describes how a student's raw score, r, depends on the number of correct answers he or she provided, c.
SOLUTION:
Total number of incorrect questions 
Total marks deducted due to incorrect question 
Total correct questions 
Total marks scored 
Total raw marks 
ormulas that describes how a student's raw score, r, depends on the number of correct answers he or she provided, c is
Here are 5 ordered pairs (0,5) (1,3) (2,1) (3, -1) (4, -3)
The slope is -2 of c. You always call the y intercept b and the slope m.
we have
Convert to vertex form
we know that
the equation of a vertical parabola in vertex form is equal to
where
(h,k) is the vertex
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
the vertex is the point 
therefore
<u>the answer is </u>
The y-value of the vertex is 
Answer:I think its C but Im not sure
Step-by-step explanation: SMILE MORE!!! :D
