Write an equation for the line that Is parallel to y=7x-13 and goes through the point (0, -9)

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Ineed with number 6 , explain how to get 1978

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.