“It will be horizontally compressed by a factor of
“Okay, now let’s say I want to shift it
“I think so,” says Adel, “but let’s check on the graphing calculator.” They proceeded to check on their calculators. After a few moments they both speak at the same time.
“Rats,” says Ceirin, “it isn’t right.”
“Cool,” says Adel, “it works.”
When they arrive at school the next morning, they compare the equations they had put into their graphing calculators while they talked on the phone. One has
Which equation is correct? Had they both subtracted
If you want to subtract