Tell whether the graph of the Quadratic function y=-3x squared +x+1 opens upward or downward

Two different linear functions are shown below with two points given from each function. use slope-intercept form or point-slope form to find the equation of each. linear function a points: (–5, –2), (–5, 7) linear function b points: (7, –5), (–2, –5) function a has: the equation of line a is: function b has: the equation of line b is:

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?