Cumulative Exam
three[revison questions
and answers]*
What is the solution to the system of equations?
y = 2x - 3.5
x - 2y = -14 - ANSWERS-(7, 10.5)
Which is a stretch of an exponential growth function?
f(x) =3/2(3/2)^x
f(x) =2/3(3/2)^x - ANSWERS-f(x) =3/2(3/2)^x
A line is drawn through (-4, 3) and (4, 3). Which describes whether or not the line represents a
direct variation? - ANSWERS-The line does not represent a direct variation because it does not
go through the origin
Which is equivalent to 243^2/5 - ANSWERS-9
What is the y-value of the solution to the system of equations?
, 3x + 5y = 1
7x + 4y = −13 - ANSWERS-2
Which best describes the relationship between the successive terms in the sequence shown?
9, -1, -11, -21, ... - ANSWERS-The common difference is -10.
Last week, Lindsay earned $10 per hour plus a $60 bonus for good job performance. She spends
of her paycheck on dinner with friends. If she had not earned the bonus, the amount she spent
on dinner would have been of her paycheck. Which equation can be used to find h, the number
of hours Lindsay worked last week? - ANSWERS-1/15(10h + 60) = 1/10(10h)
y = 5x + 23x = -y + 10
What is the solution to the system of equations? - ANSWERS-(1, 7)
Which value of a in the exponential function below would cause the function to shrink?
f(x) = a(3/2)^x - ANSWERS-4/5
Which is true about the solution to the system of inequalities shown?
y > 3x + 1 (or equal to)
y < 3x - 3 (or equal to) - ANSWERS-There are no solutions.
The amount of potential energy, P, an object has is equal to the product of its mass, m, its height
off the ground, h, and the gravitational constant, g. This can be modeled by the equation P =
mgh.
What is the equivalent equation solved for h? - ANSWERS-p/mg=h