This is clearly false as it will just mess up the question.
Answer:
b) i) Curve A
ii) - 1.75
iii) x = 1 - √5 or x = 1 + √5
Step-by-step explanation:
b) i) We are given a function y = x² - 2x - 3 and the graph of this function is also shown in the side diagram.
The equation can be rearranged to y = (x - 1)² - 4
⇒ (x - 1)² = y + 4
Therefore, this is an equation of a parabola having the vertex at (1,-4) point and its axis is parallel to the positive y-axis.
So, the curve A represents the equation given. (Answer)
ii) Now, at x = 2.5, f(x) = 2.5² - 2 × 2.5 - 3 = - 1.75 (Answer)
iii) When y = 1, then x² -2x - 3 = 1
⇒ x² - 2x - 4 = 0
⇒ (x - 1)² - 5 = 0
⇒ (x - 1)² - (√5)² = 0
⇒ (x - 1 + √5)(x - 1 - √5) = 0
⇒ x = 1 - √5 or x = 1 + √5 (Answer)
Let the total number of games be x.
Number of games Shelley's team won = 
Number of games they outscored
their opponents by more than 10 points = 
×
= 
Hence, 1/8 of the total games, Shelley's team won by 10 points.
To solve this, you start off by moving the d over to the other side
<u>c - d = 2m </u>
then you can divide everything by 2 , this will get the m by itself
Therefore, your answer is
<u>c - d / 2 = m </u>
