The relation {(-5, 5), (-6, 7), (-7, 7), (-8, 0)} is a function.
true
false

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.