The slope of the line below is -4. Use the coordinates of the labeled point to find a point-slope equation of the line.
10H
10
10
10
O A. y + 9 = -4(x-4)
O B. y - 9 = -4(x + 4)
O C. y+ 9 = 4(x-4)
O D. y - 9 = 4(x + 4)

For this case we know that m =-4 represent the slope. And with the point given (4,-9) we can find the values of a and b and we got:

And replacing we got:

And the best solution would be:

A. y + 9 = -4(x-4)

Step-by-step explanation:

For this case we need to remember that the general expression for the slope line is given by:

For this case we know that m =-4 represent the slope. And with the point given (4,-9) we can find the values of a and b and we got:

And replacing we got:

And the best solution would be:

A. y + 9 = -4(x-4)

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.