The slope of the line below is -4. use the coordinates of the labeled point to
find a point-slope equation of the line.
10
(4,-9)
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)

Step-by-step explanation:

The point-slope form of an equation of a line:

m - slope

(x₁, y₁) - point on a line

We have the slope m = -4, and the point (4, -9).

Substitute:

answer:

sometimes

*i think

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: