1+1 answer please needed

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.