Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. f(−1) is undefined. none of the above

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula, equation, to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

Which of the following tables represents exponential functions?

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).