Hwan decides to lose weight before the wrestling season begins. He weighs 148 pounds now and loses one pound per week for six weeks. Let y represent Hwan’s weight and let x represent the time in weeks. What is the slope of the line?

Question

What is the y intercept

Answer 1

y = -x + 148

compare with y = mx + b
where m is the slope and b is the y-intercept

Answer 2

Wait so the slope is -x and y intercept is 148?

Answer 3

not quite.

the slope is m, so the m part of y = -x + 148 is -1
so the slope is -1
(which is what the question stated directly)