x+y = 180; What is the angle called?
Supplementary
What form of equations do we use for lines?
y = mx + b or slope intercept form.
Solve:
100/25 x 6 + 6 x 100
30
Write an equation for a vertical line through the point (-3, 3)
x = -3
Rewrite this equation in slope-intercept form. x + y = -12
y = -x - 12
What is the slope of this equation?
x = 5
Undefined Slope
Write an equation for a line with the following slope and points.
m = 2/3 and (0, -2), (3, 0)
y = 2/3x - 2
If y=2x+2 and y=2x + 20 is on the graph, how would the lines look like?
Parallel
Write 12x-6y = -654 in slope intercept form.
y = -2x + 109
(-2,-4) Slope:-5 ; Put it into point slope form.
y+4 = -5(x+2)
Write an equation for a line with the following two points. Find the slope and y intercept. (15, -10) (5, 10)
slope = -2 y intercept = 20
y = -2x + 20
Free points: 1+1
2
Evaluate:
-2[(-18.75)/6.25] -5[8.46/(-4.23)]
16
The amount y(in dollars) of money you have left after playing x games at a carnival is y = -0.75x + 10. How much money do you have after playing eight games? Graph the equation and show your explanation.
y = -0.75(8) + 10; y = -6 + 10; y = 4 $4 dollars left after playing 8 games.