Which graph represents a linear function that has a slope of 0.5 and a y-intercept of 2?

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}