How can intercepted arcs be used to determine the measure of angles formed by a chord and tangent? How can intercepted arcs be used to determine the measure of angles formed by a secant and tangent?

The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!