First off, let's keep in mind that perpendicular lines have negative reciprocal slopes, hmmm so what's the slope of y = 2x + 5?
well, notice, that equation is in slope-intercept form, thus

.

so, we're really looking for the equation of a line whose slope is -1/2 and runs through 1,4.
Answer:
Step-by-step explanation:
Use the given functions to set up and simplify
8
x
−
20
y
−
10
8
x
-
20
y
-
10
.
v
−
20
+
5
p
−
7
z
=
5
p
+
v
−
7
z
−
20
v
-
20
+
5
p
-
7
z
=
5
p
+
v
-
7
z
-
20
8
x
−
20
y
−
10
=
5
p
+
v
−
7
z
−
20
Answer:
The distance will be in centimeters
Step-by-step explanation:
You will do the multiply and subtract
Since x=-10, plug that into the equation.
f(x) = 2(-10) + 11
= -20 + 11
y = -9
So the ordered pair in (x,y) terms is (-10,-9).
There would be 107 whistles
-equation- 235-128=107