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kkeith121p6ujlt
30.10.2020 •
Mathematics
A line has the points (-3,-8) and (3,y). The slope of the line is 2/3. what is the value of y?
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Ответ:
The value of y is -4.
Step-by-step explanation:
Using the Slope-intercept form formula, we can use the given coordinates for x and y and input it into the formula to solve for the y intercept.
Slope Intercept formula: y = mx + b where m is the slope and b is the y-intercept.
(-3,-8) Using this point, we will input the values for x and y.
-8 = 2/3(-3) + b
-8 = -2 + b
+2 +2
b = -6
The y intercept is -6 and the equation will be y= 2/3x -6
Now input the value for x from the point (3,y)and solve for y.
y = 2/3(3)-6
y = 2 -6
y = -4
This means that when x is 3, the value of y will be -4.
Ответ:
There are 100 m in 1 km
Therefore : 880 m = 0.88 km
435 km + 80.78 km + 0.88 km = 516.66 km