Identify the relation that is also a function.
a.
{(5, 4) (5, 1) (5, 3) (0, 5)}
b.
{(0, -1) (1, -2) (2, -3) (-1, 2)}
c.
{(1, 0) (2, 3) (3, -1) (1, 5)}
d.
{(4, 2) (4, -3) (9, 3) (9, -3)}

The polynomial function of least degree with a leading coefficient of 1 is: f(x) = x3 + ax2 + bx + c

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?