1) 4x ^2< 10x -1
\4x^2 -10x +1 < 0
\2) 10x - 4y + 3 < 11
\10x -4y +3 - 11 < 0
\First inequality 10x - 4y - 8 < 0
\Second inequality y >= x^2 - 3x - 4
\1. Draw the coordianate plane.
\2. Since inequality 10x - 4y - 8 < 0 symbol is < , the boundary is not included in the solution set. Graph the boundary of the inequality x + y = 8 with dotted line.
\3. To determine which half-plane to be shaded use a test point in either half-plane. A simple choice is (0, 0).
\Substitute and x = 0 and y = 0 in original inequality 10x - 4y - 8 < 0.
\-8 < 0
\The statement is true.
\4. Since the statement is true, shade the region contains point (0, 0).
\Second inequality y >= x^2 - 3x - 4
\2) Since inequality y >= x^2 - 3x - 4 symbol is >= , the boundary is included in the solution set. Graph the boundary of the inequality y >= x^2 - 3x - 4 with solid line.
\A simple choice is (2, 3)
\Substitute and x = 2 and y = 3 in original inequality y >= x^2 - 3x - 4
\3 >= -12
\The statement is true.
\Since the statement is true, the graph will be shaded inside of parabola.
\\
\