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seen Nov 21 '13 at 5:23

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accepted Finding exactly one real solution to the system
Nov
21
asked Finding exactly one real solution to the system
Nov
21
asked How to combine these two functions?
Oct
31
comment How to explain why a parabola opens up or down
for telling a beginning algebra student. I first started by explaining that if a>o, y=ax^2, y will always be positive and it will open up because the first and second quadrant are where the y is always positive. But I dont know how to transition that into y=ax^2+bx+c
Oct
31
asked How to explain why a parabola opens up or down
Oct
15
accepted List the numbers in order
Oct
15
comment List the numbers in order
Excellent thank you this was method I couldnt remember!!
Oct
15
asked List the numbers in order
Oct
10
accepted Which are tangents
Oct
10
asked Which are tangents
Oct
10
accepted Explain why perpendicular lines have negative reciprocal slopes