Answer:
y = 0.25x - 5
Step-by-step explanation:
Given line is 4x + y = 3
or y = -4x + 3
Comparing this with slope-intercept form y = mx + c :
slope of this line is -4
Product of slopes of perpendicular lines = -1
⇒ slope of a line perpendicular to this is
=
= 0.25
This line also passes through the point (-4,-6)
The equation of a line having slope m and passing through a point (h,k) is
y - k = m(x - h)
⇒ equation of line perpendicular to given line is y - (-6) = 0.25×{x - (-4)}
⇒ y + 6 = 0.25×(x + 4)
⇒ y + 6 = 0.25x + 1
⇒ <u>y = 0.25x - 5</u>
This is in the slope-intercept form y = mx + c with slope m = 0.25 and y-intercept (0,-5)
aerage rate of change is just the slope from the endpoints of teh interval
ie ![averagerateofchange=slope=\frac{f(5)-f(1)}{5-1}](https://tex.z-dn.net/?f=averagerateofchange%3Dslope%3D%5Cfrac%7Bf%285%29-f%281%29%7D%7B5-1%7D)
assuming you mean ![f(x)=480(0.3)^x](https://tex.z-dn.net/?f=f%28x%29%3D480%280.3%29%5Ex)
evalaute f(5) and f(1)
f(5)=480(0.3)^5=1.1664
f(1)=480(0.3)^1=144
average rate of change=(1.1664-144)/(5-1)=-35.7084
the average rate of change of the function on the interval x=1 to x=5 is -35.7084
The product will be 2x^2 + 5x - 3
9x + 2 + 8x + 1 = 17x + 3
The answer is 180 - 17x + 3 I'm pretty sure