Writing Linear Functions
Graphs
Parallel vs. Perpendicular
Scatter Plots
Random
100
Write an equation in slope-intercept form of the line has a slope of 2/5 and a y-intercept of -7.
y = 2/5x - 7
100
Identify the slope and y-intercept.
slope -
-1/2
y-intercept - 1
100
Find the slope of a parallel line.
f(x)=2/3x
2/3
100
The scatter plot shows the roasting times y (in hours) and weights x (in pounds) of seven turkeys.
What is the roasting time for a 12-pound turkey?
4 hours
100
The given table shows a directly proportional relationship between x and y.
What is the missing number in the table?
x 0 2 4 6
y -1 1 ? 5
3
200
Write a linear function with a slope of -9 and a y-intercept of 5
f(x)=-9x+5
200
Write the equation of this line in slope-intercept form.
y=1/2x-1
200
Determine which lines, if any, are parallel or perpendicular.
line a and line b are parallel
200
The scatter plot shows the roasting times y (in hours) and weights x (in pounds) of seven turkeys.
Describe the relationship between the data.
positive linear correlation
200
Write an equation in point-slope form of the line that has a slope of 10 and passes through (6, 2).
y - 2 = 10(x - 6)
300
Write the linear function in this graph:
y=20x-15
300
Write the equation of this line in slope-intercept form.
y=1/2x+2
300
Write an equation in slope-intercept form of the line that is parallel to the line y = 3x - 1 and passes through (-2, -8).
y = 3x - 2
300
Does this scatter plot show a positive trend, a negative trend, or no trend?
no trend
300
What is the slope of the linear function:
y = 12
0
400
Write a linear function f with the values f(0)=6 and f(7)=27.
f(x) = 3x + 6
400
What is the equation of the line?
y = 2
400
Determine which lines, if any, are parallel or perpendicular.
Line b and line c are perpendicular.
400
What is the winning percentage of the pitcher with an earned run average of 4.20?
0.6
400
Find the slope of a linear function x = 12
slope = undefined
500
Write an equation in slope-intercept form of the line that passes through (-3, 2) and (6, -1)
y=-1/3x+1
500
Which graph below represents x = 4?
A
500
Write an equation in slope-intercept form of the line that is perpendicular to the line y = 1/4x - 9 and passes through (1, 1).
y = -4x + 5
500
The table shows the amounts x (in dollars) spent on advertising for a festival and the attendances y of the festival for several years.
Write an equation of the line of best fit.
y = 0.2x + 309
500
A landlord charged $865 per month to rent an apartment in 2010. The rent increased at a constant rate and reached $1065 per month in 2018. Estimate the monthly rent in 2021.
The monthly rent in 2021 is about $1140.