Finding Slope
What format is the following : y = mx + b
the slope-intercept form
What is slope and y -intercept of this equation ?
y = -4/5x
slope = -4/5
y-intercept = 0
Parallel lines have the ____ slopes.
Perpendicular lines have _______ ________ slopes.
Negative Reciprocal
Identify the slope of the following equation. y-3= -3(x+3)
slope is -3
a )What format has x and y on the same side of the equation?
b) What format has parentheses?
a) standard form
b) point- slope
What is the following equation in standard form? y = -3/4x
y+3/4x=0
If a line is y = -3/4x - 9:
a) what is the slope of a line parallel
b) what is the slope of a line perpendicular
a) -3/4
b) 4/3
What is the slope formula?
y2-y1/x2-x1
Convert the following into slope intercept form:
y - 4= -3(x + 2)
y = -3x -2
What is the negative reciprocal of
a) 1
b) 0
a) -1
b) undefined
Convert the following into slope intercept form:
-4x + 8y = 24
y = 1/2x + 3
Write an equation IN SLOPE INTERCEPT for a line with the following slope and points.
m = 2/3 and (0, -2), (3, 0)
y = 2/3x - 2
Write the equation of a line that goes through the point ( -2, -1) and is PARALLEL to y = 3/5x -2
y + 1= 3/5 ( x + 2)
or
y =3/5x + 1/5
Write a 'y=mx+b' equation using (-12, -9) (-3, -3) to find the slope and a y-intercept of -5
y = 2/3x - 5
Rewrite the following equation in slope-intercept form. 3.5x - 7y = -21
y = 0.5x - 3 or y = 1/2x - 3
Write an equation that goes through the point (-4,-2) and has a slope of -9
y + 2= -9(x+4)
Write the equation of a line IN SLOPE INTERCEPT that is PERPENDICULAR to y= 4x-5 and goes through the point ( 0, -8)
y= -1/4x - 8
Which two lines are perpendicular?
A. 2x+y=4
B. 2x−y=5
C. x−2y=−6