A new student has joined your study group. Write step-by-step explanations telling her how to use algebra to write the equation of a line given each of the following. Be sure to include examples. a) A point and the slope. b) Two points.

2a+7+4ahow many terms? how many variables? any like terms? yes noif yes, which ones? what are the coefficients? any constants? yes noif yes, which ones? simplify the expression by combining like terms and constants: how many terms now?

Adding and subtracting matricesfind the value of each variable. x = and y = would

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?