jerseygirl1783
24.08.2019 •
Mathematics
Through (-1,5) , perp to y =1/9x+2 write the slope intercept form for the equation
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Ответ:
y=-9x-4
Step-by-step explanation:
Perpendicular lines meet the following condition:
m2*m1= -1 (a)
where m is the slope of a line
m1 is given through equation of line 1, y =1/9 x+2
m2 must be -9 -> from eq. (a)
The Line has the following equation: y=mx+b, where m=-9 and the b is the interception with y axis.
Evaluating the above equation in (-1,5) we have the following equation
5= -9*(-1)+b, we have b=-4
The line has the following equation
y=-9x-4
Slope intercept form
Ответ:
Step-by-step explanation:
The equation of a line has the following form:
Where m is the slope of the line and b is the intercept with the y axis.
If two lines of slopes m and n are perpendicular then it is true that:
For the line the slope is:
So the slope of the perpendicular line is:
So the equation is:
To find b we substitute the point in the equation and solve for b
Then the equation of the line in the form of pending interception is:
Ответ:
This means that:
w<1 kg