题目在平面直角坐标系中,已知点P(m−1P(m-1P(m−1,n2)n^{2})n2)、Q(mQ(mQ(m,n2−1)n^{2}-1)n2−1),其中m⩾0m\geqslant 0m⩾0,则下列函数的图象可能同时经过PPP、QQQ两点的是（ ）A.y=2x+by=2x+by=2x+bB.y=ax2+2ax+c(a>0)y=ax^{2}+2ax+c\left(a \gt 0\right)y=ax2+2ax+c(a>0)C.y=ax+2(a>0)y=ax+2\left(a \gt 0\right)y=ax+2(a>0)D.y=−x2−2x+c(c>0)y=-x^{2}-2x+c\left(c \gt 0\right)y=−x2−2x+c(c>0)知识点：一次函数图象上点的坐标章节：未标注
