If (a,-5) is a point on the graph of #y=x^2+6x#, what is a?
1 Answer
Sep 6, 2017
Explanation:
Solve the equation
#-5 = a^2 + 6a#
If we put all terms to one side, we get:
#0 = a^2 + 6a + 5#
#0 = (a + 5)(a + 1)#
#a = -5 or -1#
Hopefully this helps!