Slope and y-Intercept
What is the slope in the equation:
y=2x+5
2
What is a midpoint?
The middle of a line on a graph.
What does distance formula help me find?
The distance of the line on a graph from one endpoint to the other.
What are parallel lines?
Lines that never cross.
Solve:
-5 + 5
0
What is the y-intercept in the equation:
y=2/3x+4
4
What is an endpoint?
The ordered pairs on each end of a line on a graph.
What is the formula for distance formula?
d= the square root of (x2-x1) squared + (y2-y1) squared.
What are perpendicular lines?
Lines that intersect.
Solve:
12 + (-10)
2
What is the equation for slope-intercept form?
y=mx+b
What is the formula for finding the midpoint?
M= (x1 + x2/2, y1 + y2/2)
What theorem is Distance Formula related too?
Pythagorean Theorem
What is the first step in writing equations of parallel/perpendicular lines?
Write the equation in slope-intercept form.
-3 - (-11)
8
What is this equation in slope-intercept form?
x-4y=10
y=x+14
The endpoints of a line are (1,-3) and (4,2). What is the midpoint?
M=(2.5,-0.5)
Find the distance between (-2,3) and (-7,-7).
d=11.2 units
Line h is y=-1/4x+1. If the line g is parallel to line h and passes through the point (8,2), write an equation for line g.
y=-1/4x+4
-6 + (-9)
-15
A scuba diver is 20 feet below the surface of the water and will continue descending 18 feet per minute. What is the y-intercept in this word problem?
-20
The endpoints of a line are (0,-8) and (-10,9). What is the midpoint?
M=(-5,0.5)
Find the distance between (2,-9) and (-1.4).
d=13.4 units
Line c is y=-4x+6. If line d is perpendicular to line c and passes through the point (4,-2) write an equation for line d.
y=1/4x-3
-14 + 7
-7