4+4v = 3v +4
------- = -----------
-3 2
use cross products
(4+4v) *2 = -3*(3v+4)
distribute
8+8v = -9v-12
add 9v to each side
8+17v = -12
subtract 8 from each side
17v = -20
divide by 17
v = -20/17
We are given the equation of a line
y = -2x + 1
We have to find the value of y at three different values of x i.e. x = 0, -3 and 1
In order to find the value of y at any given x, simply replace x by that number.
So, for x=0, we will replace x by 0 to find the value of y. So y will be:
y = -2(0) + 1
y = 1
This can be expressed as an ordered pair as (0,1)
Similarly for x=-3, we get
y = -2(-3) + 1 = 6 + 1
y = 7
This can be expressed as an ordered pair as (-3, 7)
And, finally for x=1, we get:
y= -2(1) + 1 = -2 + 1
y = -1
This can be expressed as an ordered pair as (-1, -1)
Answer:
Complemetry angle = 90° - 40°
= 50°
C=d*pi
C=8.5 * 3.14=26.69
26.69in
