- Slope-Intercept Form: y = mx+b, with m = slope and b = y-intercept
So perpendicular lines have <u>slopes that are negative reciprocals</u> to each other, but firstly we need to find the slope of the original equation. The easiest method to find it is to convert this standard form into slope-intercept.
Firstly, subtract 3x on both sides of the equation: 
Next, divide both sides by -4 and your slope-intercept form of the original equation is 
Now looking at this equation, we see that the slope is 3/4. Now since our new line is perpendicular, this means that <em>its slope is -4/3.</em>
Now that we have the slope, plug that into the m variable and plug in (-4,-5) into the x and y coordinates to solve for the b variable as such:

<u>In short, your new equation is y = -4/3x - 10 1/3.</u>
The answer is <span>104 x times the square root of 5 x
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<span>11 times the square root of 245 x to the third plus 9 times the square root of 45 x to the third is:
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Answer:
Answer options
A) the lines are parallel
B) the lines are perpendicular
C) the lines form angles at the intersection
D) the lines form right angles at the intersection
the answer is C
Step-by-step explanation:
I got it right on my test
Answer:
76.53 cm
Step-by-step explanation:
From the question, the triangle formed has 2 sides and an included angle ;
Angle, θ = C = 45°
We use cosine rule :
Taking the side to find as c
a = 100 ; b = 100
From cosine rule :
c = sqrt(a² + b² - 2abCosC)
c = sqrt(100² + 100² - 2(100*100)Cos45
c = sqrt(10000 + 10000 - 20000 * 0.7071067)
c = sqrt(20000 - 14142.135)
c = sqrt(5857.865)
c = 76.536690
c = 76.53 cm
Answer:
y = 8x - 11
Step-by-step explanation:
Using the equation
<u>y - y1 = m (x - x1)</u>
<u>y - 5 = 8 (x- 2)</u>
<u>y - 5 = 8x - 16</u>
Subtract the 5
y = 8x - 11