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Xelga [282]
3 years ago
13

Write an equation os the line that passes through the givin points (-2,7) (3,-3)

Mathematics
1 answer:
ryzh [129]3 years ago
3 0
(-2,7)(3,-3)
slope(m) = (-3-7) / (3 - (-2) = -10/(3 + 2) = -10/5 = -2

y = mx + b
slope(m) = -2
use either of ur points (-2,7)...x = -2 and y = 7
now sub and find b, the y int
7 = -2(-2) + b
7 = 4 + b
7 - 4 = b
3 = b

so ur equation is : y = -2x + 3 or 2x + y = 3
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To find the y-intercept, solve for "b".

b=-7/3

Our equation would then be y=2/3x-7/3

2)Perpendicular lines have opposite-reciprocal slopes. our previous equation was y=2/3x+1, so our new equation would be -5=-3/2(-4)+b. Now lets solve for b.

b=-11

So our perpendicular equation would be y=-3/2x-11

Hope that was helpful. :)

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The solid triangle dilated to become the dashed triangle.

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3 years ago
What is the y-intercept of the polynomial f(x)f(x) f(x) defined below? Write the y-value only. f(x)=−4x2+x5+10x3+5x+8x4f(x)=-4x^
zhannawk [14.2K]

Answer:

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Step-by-step explanation:

Given

f(x) = 4x² +x⁵ +10x³ +5x+8x⁴

Required

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The y intercept of a function is a point where x = 0

So, we have to substitute 0 for x in the above function

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Substitute y for f(0)

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