Answer:
y=-3
Step-by-step explanation:
function of line: y=mx+c
find the slope first;
y=-3,y0=-3,x=2,x0=-4
m=(y-y0)/(x-x0)
m=(-3-(-3))/(2-(-4))
m=(-3+3)/(2+4)
m=0/6
m=0.
y=mx+c, m=0, (use either of the points), i am using (2,-3)
-3=0*(2)+c
c=-3
y=mx+c, m=0, c=-3
y=0*x+(-3)
y=-3.
120 if you divide the two, so that's how many she'd need.
A] <span>A remote-control airplane descends at a rate of 2 feet per second. After 3 seconds it is 67 feet above the ground.
the point slope equation will be given as follows:
y-y1=m(x-x1)
where:
slope,m=2 ft/sec
(x1,y1)=(3,67)
thus plugging in the values in the formula, we obtain the point slope equation as follow:
y-67=2(x-3)
Answer:
</span>y-67=2(x-3)
b]The height of the plane after 8 seconds will be:
x=8 sec
but:
y-67=2(x-3)
substituting x=8 we get:
y-67=2(8-3)
y-67=2(5)
y=10+67
y=77
thus the height after 8 seconds is 77 ft