Describe how to plot (-6, 10)
Left 6; up 10
2x + y = 8. Fill in the missing numbers (0,___) (1,___) (2, ____)
(0,8) (1,6) (2,4)
Rewrite into slope-intercept form: 7x + 2y = 14
y = -7/2x + 2
Describe how to plot (10, -6)
Right 10; down 6
Graph the intercepts of 2x + 5y = 20
plot 10 on the x axis, 4 on the y axis. Connect
T = (9/2)R
Is (9,0) an x or y intercept? Why
x-intercept; it lies on the x-axis.
horizontal line
Given: y = -2x + 1
What is the slope? y-intercept?
Graph
m = -2
y-int = 1
To graph... put a point at 1 on the y-axis. then down 2 right 1 down 2 right 1
Graph the intercepts of 6x - 3y = 12
plot a point a 2 on the x axis and -4 on the y axis. Connect.
B varies directly as T. B = 3 when t = 7. Write an equation.
B = (3/7)T
What are the signs of every point in the 2nd quadrant? (ex. (++) (+-) (--) (-+)
(-+)
What is the slope of a vertical line?
Undefined
f(x) = 7x + 2. Find f(3)
23
Quadrant IV
Graph y = (-6/10)x + 10
plot 10 on the y axis. Go down 6 and right 10 down 6 and right 10
y = -2x + 10. Write in standard form. Find the x and y intercepts
2x + y = 10. X int = 5; y int = 10
g(x) = 6x + 1. Find x if g(x) = 25.
x = 4