Across
- 1. Graph of the quadratic polynomial is ------
- 4. parallel lines ---- cut each other.
- 5. if b^2-4ac =0 the the both roots are --- and equal
- 6. Maximum numbers of zeros in quadratic equation are ----.
Down
- 2. ax+by+c = 0 is a ---- equation in two variables.
- 3. ----- lines indicates only one solution.