Answer:
A= −3x+30
A=30 when x=0 which is the y−intercept.
(0,30) is a point on the graph
A=12 when x=6.
Find the slope using the two points
12-30/6-0= -18/6=-3
Answer:
See diagram attached.
Step-by-step explanation:
The line of reflection of preimage ABC reflected onto image A'B'C' can be found by the perpendicular bisector of lines joining the corresponding points of the image and preimage, for example, AA', or BB'.
See diagram attached.
Answer:
a) 
b) 
c) 
Step-by-step explanation:
Given the curve

a) If the x-coordinate of P is
, then the y-coordinate is
so point P has coordinates 
If the x-coordinate of Q is
, then the y-coordinate is
so point Q has coordinates 
b) The gradient of the secant RQ is

c) If
then the gradient 