SLOPE return to PCTC
The slope of an equation is the coefficient of
x when the coefficient of y is one.
In this problem 4y = 7x + 2 Seven is not the slope because the y
coefficient is 4 Solve for y; y = 7/4 x + 2/4
The slope is 7/4 What is the slope of 3y = 6x + 9?
answer The slope of parallel lines are
equal! Are the following lines parallel? y = 3.5x + 6 and y = 3.5x - 6
answer When multiplied together the
slope of perpendicular lines are equal to negative one.
Are the following lines perpendicular?
y = 3x + 7 and y = - 1/3 x + 2
answer The graph of y = 3 is a horizontal line and the graph of x = 2
is a vertical line.
Horizontal and vertical lines are perpendicular to each other
by the definition of vertical and horizontal lines
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