In the function y= – 3x^2 +1, what effect does the negative sign
have on the graph, as compared to the graph of y=x^2?
o a. it shrinks the graph horizontally by a factor of 3.
o b. it reflects the graph across the x-axis.
o c. it stretches the graph horizontally by a factor of 3.
o d. it shrinks the graph vertically by a factor of 3.