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29.08.2020 •
Mathematics
Write the slope-intercept form of the line passing through (–8, –5) and (4, 4).
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Ответ:
Step-by-step explanation:
We can find the slope through two points.
m = (y2 - y1)/(x2 - x1)
m = (4 - -5)/(4 - -8)
m = 9/12 = 3/4
The slope of the line is 3/4.
Slope-intercept form of a line is y=mx+b. Where m is the slope and b is the y-intercept.
y = 3/4x + b
A point on the line is (4, 4). x = 4 and y =4.
4 = 3/4(4) + b
4 = 3 + b
b = 1
The y-intercept is 1.
Ответ:
Step-by-step explanation:
Finding the slope (m) first:
Given the coordinates (-8 , -5) and ( 4 , 4 )
Slope =
Slope =
Slope =
Slope =
Slope = m =
Finding y - intercept (b) :
Taking a coordinate say (4,4)
And putting it in slope intercept form along with b
y = mx+b
Where y = 4 , m = 3/4 and x = 4
4 = (3/4)(4) + b
4 = 3+b
4-3 = b
1 = b
So,
b = 1
Putting m and b now in slope-intercept equation:
y = mx+b
Ответ:
1) Being f(x) a linear function means it is well defined between the points x = 3 and x =4 and you can conclude that it is a decreasing continuos function (decreasing because f(4) < f(3).
2) Being g(x) a ratonal functiion means that it is the ratio of two polynomials, g(x) = p(x) / m(x).Then, g(x) is continuous in the range [3,4] if and only if m(x) ≠ 0in the same range.
3) Given that you do not know whether m(x) meets that condition, you cannot conclude whether theres is a solution or not to f(x) = g(x).