1. maryann is tracking the change in her vertical jump over 6 months. use the table to write a linear function that models her jump distance.
month vertical jump in inches
0 16
2 17
4 18
6 19
a. f of x equals one half times x plus 16
b. f of x equals one half times x plus 19
c. f(x) = 2x + 16
d. f(x) = 2x + 19
2. what is the equation of a line that contains the points (5, 0) and (5, −2)?
a. x = 5
b. x = 0
c. y = 0
d. y = 5
3. choose the equation that represents a line that passes through points (−1, 2) and (3, 1).
a.4x − y = −6
b. x + 4y = 7
c. x − 4y = −9
d.4x + y = 2
4jewels has $6.75 to ride the ferry around connecticut. it will cost her $0.45 every time she rides. identify the dependent variable and independent variable in this scenario.
 a. the number of rides is the independent variable, and the total cost is the dependent variable.
b. the total cost is the independent variable, and the number of rides is the dependent variable.
c. the number of rides and the total cost are both independent variables.
d. the number of rides and the total cost are both dependent variables.