Not sure if I am quite getting this correct?
y = 2x - 3
y = -x^2 + 4x +5
I am trying to solve the above and compare the results to a graph I plotted with a straight line and a parabola. I am looking at where the graph intersects and at the moment there seems to be slight differneces between my values from the graph and the above.
2x - 3
-x^2 + 4x +5
2x - 2 = x - 1
2(-1) - 3 = -2 -3 = -5
4(-1) + 5 = -4 + 5 = 1
(x + 1) (x - 5)
x = - 1 or x = + 5
These x values conside with previous work I have done and don't seem wrong, please advise.
By comparison to the graph(s), the straight line graph has points (0, 1.5) and the parabola has points (0, 5).
so somewhere I sem to be not quite right?