Question 78664
Y-4=-2(X-5)
Y=-2X+10+4
Y=-2X+14 THE SLOPE(m)=-2 & THE Y INTERCEPT(b)=14
{{{ graph( 400, 400, -16, 15, -20, 20, y = -2x +14) }}} (graph 400x400 pixels, x from -16 to 15, y from -20 to 20, y = -2x +14). 
ONE DOWN. TRY SOLVING THE TWO REMAINING PROBLEMS. :)