4 Drag the tiles to the correct boxes to complete the pairs.
Match the equations of the lines with their graphs.
y = 2x + 3
y = -2x + 3
y=2x-3
y=-2x-3

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