Answer:
The equation that matches the function shown is option;
C. 
Step-by-step explanation:
The given graph of the function is a sinusoidal graph
The values of 'x' and 'y' coordinates at the maximum, x-intercept and minimum points are given as follows;
x,
y
0
0
π
1
2·π
0
3·π
-1
4·π
0
We note that sin(π/2) = 1, sin(π) = 0 sin(3·π/2) = -1, and sin(4·π/2) = sin(2·π) = 0
Therefore;
y = the sine of half the x-value
Which is presented as follows;
.
C and B is proportional relationships , because the proportional relationships always start at zero and the line must be straight !
Answer:

Step-by-step explanation:
we have the points
(-9,7) and (-6,-3)
step 1
Find the slope
The formula to calculate the slope between two points is equal to
substitute the values


step 2
Find the equation in point slope form

we have


substitute
---> equation in point slope form
step 3
Find the equation of the line in slope intercept form

we have

Isolate the variable y
Distribute right side

subtract 3 both sides


Answer:
all work is shown and pictured
Answer:
Morgan, its a straight line and it goes through the origin
Step-by-step explanation: