What is the slope of (-5,-3) and (2,4)

On a architect's drawing of a house, 1 inche representa 1.5

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

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