Answer:
detailed answers below
Explanation:
2a)
vertex is (-3, -4) because this is the turning point (a bend) of the graph.
axis of symmetry is the line that splits the graph in half down the middle. that is the vertical line x = -3.
minimum value is -4. minimum because the graph is 'u' shaped. the minimum occurs at y = -4 (think of horizontal line at y = -4. there is no part of the graph under that).
y-intercept is 4. the graph crosses the y-axis at y = 4.
x-intercepts are at -5 and -1. these are where the graph crosses the x-axis.
b)
vertex is (1, 9) because this is the turning point (a bend) of the graph.
axis of symmetry is the line that splits the graph in half down the middle. that is the vertical line x = 1.
maximum value is 9. maximum because the graph is 'n' shaped. the maximum occurs at y = 9 (think of horizontal line at y = 9. there is no part of the graph above that).
y-intercept is 7.5. the graph crosses the y-axis at y = 7.5.
x-intercepts are at -2 and 4. these are where the graph crosses the x-axis.