Guided Practice Tell whether the graph of the equation is a horizontal or a vertical line. Explain your choice.

y = –1

A.
horizontal; for all values of x, y = –1

B.
vertical; for all values of y, x = –1

C.
horizontal; for all values of x, y = 0

Which statement best describes the polynomial

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Which expression is rational? 6. , square root two, square root 14, square root 49