25. Which graph shows a proportional relationship 26. Does the table show a proportional relationship? If so, what is the value of y when x is 9?
.
a. yes, 90
b. yes, 45
c. yes, 40
d. no

d

step-by-step explanation:

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: