Open Middle®
Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make the statement true.
Hint
What do we need to have true for the lines to be perpendicular?
What would it mean for the equation of a line to pass through a given coordinate?
What would it mean for the equation of a line to pass through a given coordinate?
Answer
One possible answer:
y=2/8x+6
4x+1y=5
(3,-7)
y=2/8x+6
4x+1y=5
(3,-7)
Another possible solution is:
y=(1/2)x+7
6x+3y=9
(4,-5)
Source: Andy Schwen
Solution 2 is wrong
I agree with you, Ethan, because the 5 is repeated. I’ve edited the 2nd solution to make it satisfy the conditions.