What makes a band a band?
R=4
theta=pi/2
x= r cos(theta) = 4 cos(pi/2) = 4(0) = 0
y = r sin(theta) = 4 sin(pi/2) = 4(1) = 4
(0,4) is the answer.
X quantity of first plant which cost $7
y quantity of second plant which cost $10
z quantity of third plant which cost $13
{x+y+z=15
{7x+10y+13z=150
There are 8 solutions with spending $150
Five of them are:
1x$7 + 13x$10 + 1x$13
2x$7 + 11x$10 +2x$13
3x$7 + 9x$10 +3x$13
5x$7 + 5x$10 + 5x$13
6x$7 + 3x$10 + 6x$13
y = mx +b
y = -2x +0
the y intercept is 0
so one point is (0,0)
the slope is -2
we go down 2 to the right 1 (1,-2)
we now have 2 points
2 points make a line
