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3 years ago

Slope is - 3 And (0,-4) is on the line

2 answers:

6 0

The equation of a line that has slope m and passes through the point (x1,y1) is
y-y1=m(x-x1)

given
slope=-3
point=(0,-4)
x1=0
y1=-4

equaton is
y-(-4)=-3(x-0)
y+4=-3(x)
y+4=-3x

sasho [114]3 years ago

3 0

I hope this helps you

x'=0 y'= -4

slope (x'-x)=y'-y

-3. (0-x)= -4-y

-3.-x= -4-y

3x= -4-y

y= -3x-4

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3 years ago

Solve this problem using the proper formula. A carpenter is building a bookcase the perimeter of the top is 108 in. What length

lapo4ka [179]

Assuming the length is y and the width is x
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3 years ago

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The length of a rectangle is 4 yd more than twice the width x. The area is 390

masya89 [10]

Step-by-step explanation:

step 1. let l be the length of the rectangle

step 2. l = 2x + 4

step 3. lx = 390 yd^2

step 4. (2x + 4)x = 390

step 5. 2x^2 +4x = 390

step 6. 2x^2 + 4x - 390 = 0

step 7. -4 +- sqr(4^2 -4(2)(-390))/2(2) quadratic formula

step 8. (-4 +- sqr(3136))/4

step 9. (-4 +- 56)/4

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3 years ago

Find the angle x in this triangle

Romashka-Z-Leto [24]

Answer:

x = 36

Step-by-step explanation:

A triangle has 180°.

That third angle is 360 - 8x.

So the equation is: 180 = 2x + x + 360 - 8x.

Simplify: 180 = -5x + 360

Add/Subtract: 5x = 180

Divide: x = 36.

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3 years ago

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