y -3x = 4
Put it in the form of Slope-Intercept form: y = mx + b
y = 4 + 3x
y = 3x + 4
compare it to y = mx +b
m = slope = 3
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If the line has a slope of 2, then the perpendicular line has a slope of -1/2. The slope of a perpendicular line is the negative reciprocal. Another example would be if the slope of a line is -1/4, then the slope of the perpendicular is 4.
1/4
If two nonvertical lines are perpendicular, then the product of their slope is -1.An equivalent way of stating this relationship is to say that one line is perpendicular to another line if its slope is the negative reciprocal of the slope of the other. For example, if a line has slope 3, any line having slope - 1/3 is perpendicular to it. Similarly, if a line has slope - 4/5, any line having the slope 5/4 is perpendicular to it.
y=3x+2 so the gradient or slope is 3
Which of the following is the point-slope equation of the line with a slope equals -4 and a point of -2 3?