A
What quadrant is (-10, 0) in?
x-axis
What quadrant is (0, -10) in?
y-axis
What quadrant is (-10, 2) in?
II
Where is (-2, 2) located at on a coordinate plane?
2 units to the left and 2 units up from the origin
Where is (0, 3) located at on a coordinate plane
3 units up from the origin
Where is (-1, -3) located at on a coordinate plane?
1 unit to the left and 3 units down from the origin
State whether the point lies on the graph of the line:
y = -2x + 2; (-1, 0)
no
State whether the point lies on the graph of the line:
y = -2x + 2; (8, -14)
yes
Make an x/y chart for
y=-4x - 4
(-1, 0) (0, -4) (1, -8)
Rewrite 2x + 3y = 6 in function form.
y = -2/3x + 2
Use a table of values to graph the equation.
y = -3/4x + 1
(-4, 4) (0,1) (4, -2)
Find the x-intercept.
-7x - 3y = 42
-6
Find the y-intercept.
2x - 6y = -18
3
Find the slope.
(2, 4) (4, -4)
m = -4
Find the slope.
(-1, -1) (-3, -6)
5/2
Graph the line with the given intercepts. x-intercept: -1 & y-intercept: 2
(see graph)
State whether the slope of the line with an x-intercept of 5 and a y-intercept of 0 is positive, negative, 0 or undefined.
0
What is the constant of variation and the slope of the direct variation model.
y = 4/5x
k = 4/5 and m= 4/5
The variables x and y vary directly. Us the given values to write an equation that relates x and y.
x= 3 and y= -9
y = -3x
y = 4/3x - 3
Find the slope and y-intercept of the graph of the equation.
m = 4/3 and b = -3
A) Write the equation in slope-intercept form. x + y = 2
B) Make an x/y chart.
C) Graph
A) y = -x + 2
B) (-1, 3) (0, 2) (1, 1)
C) See graph
Are these lines parallel?
10y + 20 = 6x
5y = 3x + 35
yes
Decide whether the graph represents y as a function of x. (I will draw graph.)
?
A) Decide whether the relation is a function.
B) If it is a function, give domain and range.
(-3, 1) (2, -1) (3, 0)
A) yes
B) Domain: -3, 2, 3
Range: 1, -1, 0
Graph the function. g(x) = -2x
(See answers.)