41. Write an equation of the line in
slope-intercept form that passes
through the points
(2,1) and (4, 0).
42. Write an equation of the line in
point-slope form that passes
through the point (7, –5) and
has a slope of m = 4.
43. Write the equation in standard
form without fractions
44. Write an equation in slopeintercept form of the line that is
parallel to the one given and
passes through the given point.
(1, 3); y = 7x + 5
45. Write an equation in slopeintercept form of the line that is
perpendicular to the one given
and passes through the given
point. (4, 8); y = –2x – 441.
47. Find the line of best fit for the data, describe the correlation and predict the height of someone whos shoe size
is 5 inches
48. Solve the system using
substitution
x – 3y = –14
x – y = –2
49. Solve the system using
elimination
3x + 10y = 5
7x + 20y = 11
50. You earn a fixed salary working
as a sales clerk making $11 per
hour. You get a weekly bonus of
$100. Your expenses are $60 per
week for groceries and $200 per
week for rent and utilities. How
many hours do you have to work
in order to break even?
51. You solved a linear system with
two equations and two variables
and got the equation−6 = −6.
How many solutions does the
system of equations have?
52. Sketch a graph of the inequality.
y > 3x – 4
53. Write the system of inequalities
for the graph