Can some one please help me solve these: 1) y = -3/2x + 12
2) y = 3/2x + 12
3) y = -3/2x - 12
4) y = 3/2x - 12
5) y = 4/5x + 4
6) y = -4/5x + 4
7) y = 4/5x -4
8) y = -4/5x - 4
9) y = 12
10) y = -12
11) x = -10
12) x = 10

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