What is true about the parabola y=-3x^2-x+4 ?

When turned about its axis of rotation, which shape could have created this three-dimensional object?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab