In the xy-plane, the line x + y=k, where k is a constant, is tangent to the graph of y=x^2+3x+1. what is the value of k?

k = x+y

k = -2 -1

k = -3

hi do you need an answer for your question?

step-by-step explanation:

isn't it a pentagon? sense [3 (triangle) + 4 (rectangle)] - 2 (triangle and rectangle connected) = 5 (pentagon)