1. ariel travels 400 miles in 8 hours. what is her rate of change or speed?

enter your answer in the box:

2.which linear equation is the best representation of the line of best fit for the scatter-plot?

a) y = 3

b) x = 3

c) y = -3

d) x = -3

3. which linear equation best represents the line of best fit for the scatter-plot? a) y = 1 3 x - 1

b) y = -1 3 x + 1

c) y = 3x + 1

d) y = 3x - 1 4)

4. which of the choices is not a good example of a line of best fit?

a)

b)

c)

d)

the cost of tuition at johnson community college is $160 per credit hour. each student also has to pay $50 in fees. model the cost, c, for x credit hours taken. a) c(x) = 50x

b) c(x) = 160x

c) c(x) = 110x

d) c(x) = 160x + 50