Solving Equations
3.2 = -0.4n
n = -8
Find the value of y for the given value of x:
y = 2x - 3 ; x = -4
-11
Identify the slope and y-intercept for the linear equation:
y = 2x - 6
m = 2
b = -6
Simplify the expression:
(-12)-7 x (-12)7
1
Find the square root:
square root of 1
1
5m - 1 = 4m + 5
m = 6
find the value of y for the given value of x:
y = 2 - 9x ; x = 2/3
-4
Identify the slope and y-intercept of the linear equation:
x + 5y = 10
m = -1/5
b = 2
Write the number is standard form:
2 x 105
200,000
Find the hypotenuse of the right triangle based on the given measurements:
a = 12 in
b = 35 in
c = ?
c = 37 in
3(5p - 3) = 5(p - 1)
p = 0.4
Do the following ordered pairs represent a linear or nonlinear function:
(3,1) (6,10) (9, 19) (12, 28)
Linear
Identify the slope and y-intercept of the linear equation:
-3x + 6y = 12
m = 1/2
b = 2
Write the number in scientific notation:
0.00036
3.6 x 10-4
Find the "b" of the right triangle:
a = 0.3 cm
b = ?
c = 0.5 cm
0.4 cm
Solve the equation for y:
20 = 5x + 10y
y = -1/2x + 2
Do the following ordered pairs represent a linear or nonlinear function:
(1,3) (3,1) (5,1) (7,3)
nonlinear
Solve the system of linear equations:
2x + y = 3
x - y = 3
(2, -1)
Evaluate the expression. Write your answer in scientific notation:
(9.6 x 107) / (1.2 x 10-4)
8 x 1011
Find the "a" of the right triangle:
a = ?
b = 24 in
c = 26 in
10 in
Solve for y:
0.5 = 0.4y - 0.25x
y = 0.625x + 1.25
The equation y = 7.9x represents the cost y (in dollars) of buying x pounds of chicken salad. Do this equation represent a linear or nonlinear function? Why?
Linear.
The equation is in slope-intercept form.
Solve the system of linear equations:
x - y = 3
x + 2y = -6
(0, -3)
(6.4 x 105) - (5.4 x 104)
5.86 x 105
Find the cubed root:
cubed root of 729
9