Answer:
-13
Step-by-step explanation:
6-7 x 6+7
-1 x 13
-13
5*4^2-3*4*5=80-60=20
Hope that helps you
C.,E
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Answer:
m = - 5/4
Step-by-step explanation:
If two lines are perpendicular, their slopes are negative reciprocals, which means that their product is -1
We can write the equation
4*x - 5*y + 13 = 0
as: 5*y = 4*x + 13 or
y = (4/5)*x + 13 (1)
Equation (1) is the equation of a straight line in its slope point form, 4/5 is the slope, according to this the slope of a perpendicular line is
-5/4
