1) What is a variable? a) It's a number in an equations b) It's a letter in an equation c) It's a letter representing an unknown number in an equation d) It's a number representing an unknown letter in an equation 2) In the equation 2x + 3y = 19, what is the variable? a) x b) = c) y d) Both x and y are variables 3) What branch of mathematics deals with equations with variables? a) Geometry  b) Algebra c) Physics d) Calculus 4) Which symbol is present in every equation? a) x b) y c) - d) = e) + 5) How do we figure out the value of a variable?  a) Add up all the numbers in the equation b) Subtract all the numbers in the equation c) Isolate the variable on one side of the equals sign  d) A variable has no set value 6) How would you solve the equation 4x=100 a) Divide each side by 4 b) Multiply each side by 4 c) Add 4 to each side d) Subtract 4 from each side 7) In the equation 2x + 3y= 19, what is the constant? a) 2 b) 3 c) 19 d) 5

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