Plotting points on a specific line in a graph

[cas13030 (Jeff Castillo)]

Hello:

I’m trying to graph this integral in Mathematica, but I’m trying to have it where I can display two points on the graph. Does anyone happen to know how to do this? I’m trying to make it look like example 1, where I have technology project 3. I just want the points to be displayed in my project as seen in example 1.

[onyinabrothers (Yaw Antoa Onyina)]

Show[Plot[3 x^2 + 2 x - 4, {x, -3, 5},
PlotRange → {{-4, 6}, {-10, 85}}],
AxesLabel → {“x-axis”, “y-axis”},
Epilog → {PointSize[Medium], Red,
Point[{{-3, 3 ((-3)^2) + 2 (-3) - 4}, {5,
3 ((5)^2) + 2 (5) - 4}}]}, ImageSize → 270]