The ordered pairs in the table below represent a linear function,
Х
у
з
2
5
9
What is the slope of the function?
1
О 4
1
2
ООО
2
4

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b