Writing and Solving Equations in Two Variables — Unit test Answers

What are the slope and the y-intercept of the linear function that is represented by the table?xy–1003

The linear equation when b = 5 and m = –2 is

A line passes through the points (–2, –8) and (–4, –8). Which shows the graph of this line?

The depth of snow after n hours of a snowstorm is represented by the function f(n + 1) = f(n) + 0.8 where f(0) = 2.5. Which statement describes the sequence of numbers generated by the function?

A direct variation function contains the points (–9, –3) and (–12, –4). Which equation represents the function?

Karl has stamps in his desk drawer. The possible combinations of stamps are shown below.

A line passes through the points (9, 30) and (18, 30). Which statement is true about the line?

Which linear function has the same y-intercept as the one that is represented by the graph?

A line is drawn through (–4, 3) and (4, 3). Which describes whether or not the line represents a direct variation?

The graph below shows the total cost for lunch, c, when Will and his friends buy a large salad to share and several slices of pizza, p.

Consider the linear function that is represented by the equation and the linear function that is represented by the equation . Which statement is correct regarding their slopes and y-intercepts?

Which point is located at (5, –2)?

Jill converted the equation of the line into slope-intercept form and found the slope and y-intercept of the line as follows.What was her mistake?

Which expression can be used to determine the slope of the line that passes through the points (–7, 3) and (1, –9)?