Slope
Will a line going down and to the right have positive or negative slope?
Negative slope
If a line has an equation y = 2x - 7, what is its slope?
2, or 2/1
What is the x-coordinate of the point where these lines intersect? y = 3x - 10 and y = 7x + 30
-10
What is the x-coordinate of the point where these two lines intersect?
5x - 9y = 11
2x + 9y = 17
x = 4
Should an inequality using this symbol ( < ) be dotted or solid?
Dotted
What is the slope of the line that goes through the points (3, 7) and (9, 12)?
5/6
If a line has an equation of y = 2/3 x - 5, what is its y-intercept?
-5
Find the point where these two lines meet: y= -3x + 8 and y = 2x - 7
(3,-1)
The sum of two numbers is 32, but the difference between them is 12. What are the two numbers?
22 and 10
For the inequality y > 5/8 x - 4, which side should you shade?
The side with (0,0)
What kind of line has a slope of zero?
Horizontal line
For the line y = 4x - 11, what is the y coordinate when x = 5?
9
Solve the following system of equations:
x - 3y = 24
y = 2/3 x - 7
(-3,-9)
To solve the following system of equations using the elimination method, what is the best first step?
8x + 3y = 18
-2x + 5y = 7
Multiply the entire bottom equation by 4
For the inequality 8x - 3y > 14, which side should you shade?
The side that does not contain (0,0)
What kind of line has an undefined slope?
Vertical line
What does y = |x| look like?
A "v"
Solve the following system of equations:
y = 5x - 1
-10x +2y = -2
Infinite solutions (same line)
Solve the following system of equations:
4x - 6y = 10
-2x + 3y = 5
No solution (parallel lines)
Rewrite this inequality in slope intercept form:
2x - 3y > 12
y < -2/3 x - 4
What is the equation for a line that goes through (0,-8) and (2,12) in slope-intercept form?
y = 10x - 8
Where is the center or "turning point" of the graph y = |x - 2| + 1?
(2,1)
Solve the following system of equations:
2x + y = 7
3x + 2y = 12
(2, 3)
Solve the following system of equations:
5x - 2y = 17
3x + 6y = 3
(3, -1)
For the inequality y > x, which side should you shade?
The upper left side