Mathematics
29.10.2021 07:56
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What is the equation of the line through point (2, 1) and perpendicular to the line

What is the equation of the line through point (2, 1) and perpendicular to the line through (-4, 1) and (3, -2)? A) y= 7/3X + 11/3 B) y= 3/7X + 11/3 C) y= -3/7X - 11/3 D) y= 7/3 X -11/3
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KillerSteamcar
KillerSteamcar
4,6(5 marks)

D) y= 7/3 X -11/3

Step-by-step explanation:

Using the point slope equation of a line expressed as

y-y0 =m(x-x0)

(x0,y0) is the point on the line

m is the slope

First let us get the slope of the line passing through (-4, 1) and (3, -2)

m = y2-y1/x2-x1

m = -2-1/3+4

m= -3/7

Since yh required line is peependicular to this line, then its slope will be;

M= -1/m

M = -1/(-3/7)

M = 7/3

Get the equation needed

Substitute m = 7/3 an the point (2,1) into the equation above

y - 1= 7/3(x-2)

y = 7x/3-14/3 +1

y= 7x/3 -11/3

Hence option D is correct

christianconklin22
christianconklin22
4,7(95 marks)
For sales tax, you just have to multiply the percentage by the number. So you can only have one step, add 1 after you divide the percentage by 100.
45.5•1.07=48.685
The cent only goes to the hundredths, so we have to round.
The total amount is $48.69.

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