7-12 = -5 because the calculator says that the slope = the diameter of the radius
Answer:
y = - x^2 + 4
which agrees with answer B
Step-by-step explanation:
Notice the graph is that of a quadratic function centered on the y-axis, with negative leading coefficient (branches of the parabola pointing down), and with vertex on the y-axis at the point (0, 4).
Therefore its equation is best represented by:
y = - x^2 + 4
which also crosses the x axis at the points x = -2 and x= 2, in agreement with the graph.
The slope will always be next to X when the equation is in slope intersect form (y=mx+b). So the slope in that equation is -1/2.
