Subsitution
If x=3, what is the value of 2x+5?
11
Solve the system:3x-y=12 and 2x+y=13
(5,3)
What is the y-intercept? (2,2)
2
What is Point-Slope Form?
y − y1 = m(x − x1)
What is the slope intercept form?
y=mx+b
Find the value of the expression 3x+2y when x=5 and y=3.
21
Solve the system: 3x+y=10 and x-y=2
(3,1)
What is the x-intercept of 5x + 3y = 15?
3
What is the slope of the line that passes through the points (2,3) and (5,9)?
2
Find the equation of a line with a slope of 3 and a y-intercept of -2.
y = 3x - 2
Find the value of 4x - y when x = 9 and y = 8
28
5x+y=9 and 10x-7y=-18
(1,4)
What is x-intercept?
The x-intercept is the point where a line or curve crosses or touches the x-axis.
Find the slope of the line passing through the points (2, 3) and (5, 11).
8/3
What is Slope-Intercept Form?
Slope-Intercept Form of a linear equation is one of the most common ways to express a linear relationship between two variables.
Solve the system: -4x + y = 6 and -5x - y = 21
(-3, -6)
3x+4y=15 and 2x+3y=11
(1,3)
What does the point on the graph mean?
Where the lines intersect
Determine the slope of the line that passes through the points (−4, 7) and (2, −1).
-4/3
Convert the equation 3x − 4y = 12 to slope-intercept form and identify the slope and y-intercept.
m = 3/4 and b = -3
Solve the system: 2x-3y=-1 and y-x=-1
(4,3)
-7x-10y=45 and -3x-5y=25
(5,-8)
Definition of Line Graph
When data is represented using a continuous line, it is called a line graph
Find the slope of the line given by the equation 2x + 5y = 10.
m = -2/5 and b = 2
Determine the slope-intercept form of the line passing through the points (2, 4) and (4, 8).
y = 2x