Answer:
where is your questions??
Step-by-step explanation:
Answer:
y= -8x-2
Step-by-step explanation:
30-(-42)/-4-5 = slope = 72/-9 simplified to -8
Now that you have the slope, plug in the points
30=-8(-4)+b
30=32-2
B= -2
Since we have the endpoints of a diameter the center is very easy to find. It is the midpoint of the diameter endpoints, which is just the average coordinates...
The center is:
((-7+3)/2, (-10+2)/2)
(-2,-4)
To find the radius we can use the endpoints again to find the diameter squared and then get the radius from that:
d^2=(dy)^2+(dx)^2
d^2=(2--10)^2+(3--7)^2
d^2=12^2+10^2
d^2=144+100
d^2=244
d=√244, since d=2r, r=d/2
r=√(244/4)
r=√61
The equation of a circle is (x-h)^2+(y-k)^2=r^2. We found earlier that the center was at (-2,-4) and we just saw that r^2=61 so:
(x+2)^2+(y+4)^2=61
The answer is 69 because when you substitute 3 for x, and do the math, you get 69.
Answer:
c
Step-by-step explanation:
beacuse if you multiply all