Question

The table below represents a linear function f(x) and the equation represents a function g(x).





x

f(x)


−1

−11


0

−1


1

9


g(x)

g(x) = 5x + 1



Part A: Write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x). (6 points)

Part B: Which function has a greater y-intercept? Justify your answer. (4 points)

Answer 1

I know the slope is 5

Answer 2

yes
the y intercept is the last number in g(x) = 5x + 1

Answer 3

slope of g(x) is 5 and y-intercept is +1

Answer 4

or you could just write it as 1.

Answer 5

to find the slope of f(x) you need to find the value of
difference of y values in 2 consecutive points
--------------------------------------
difference in x values in 2 cosecutive points

Answer 6

first 2 points are ( -1,-11) and (0 -1)

so the slope = (1 - (-11))
---------
(0 - (-1))

Answer 7

remember that 2 negative togethher like in the above become a plus

Answer 8

example -2-(-4) = - 2 + 4 = 2