Factor this polynomial 20x^3+44x
1 answer:
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3x-2=0.5-x/4, 3x-2-0.5= -x/3, 3x-2.5=-x/3, -3(3x-2.5)=-3(-x/3), -9x+7.5=x, x+9x=7.5, 10x=7.5, x=7.5/10, x=0.75
Answer:
Step-by-step explanation:
The initial line is given in "point-slope form" ( therefore we can easily extract from it the slope, and obtain from it what should be the slope of a line perpendicular to it:
Given the expression:
we understand that the slope is "-2", and the point through which the line passes is the point (6,4) on the plane. We are concerned about the slope, since a line perpendicular to the given line must have a slope that corresponds to the "opposite of the reciprocal" of the original slope.
The opposite of "-2" is "2", and the reciprocal of this is "1/2".
Therefore the slope of the perpendicular line must be "1/2".
Now we can build the equation of the line perpendicular line through the point (-2,-2) by using again the "point-slope form":
Solving for y in this last expression we express the line in slope_y-intercept form: