Open Middle®
Directions: Use the digits 1 to 9, at most one time each, to fill in the boxes so that the line is tangent to the parabola.
Hint
Set the functions equal to each other. When solving this equation, the discriminant must be 0.
Answer
One possible answer:
y=x^2+6x+7
y=2x+3
y=x^2+6x+7
y=2x+3
Source: Erin Stenger
