The graph of y= x^2 +4x +3 is shown
work out a and b please

Me because some of question i don’t understand

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.