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tina5513
12.01.2020 •
Mathematics
What is the slope of the street line through points (2,10) and (5,8)
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Ответ:
since you have 2 points, you can use this equation for solve for "m", the slope
y2-y1/x2-x1
this would be 10-5/8-2 in this case, which is 5/4
you now have 5/4 as your slope
you can then take one of your points, and substitute in for the original y=mx+b equation
8 = 5/4 * 5 + b
8 = 25/4 + b multiply the fractions together (multiply across)
32 = 25 + b (multiply both sides by 4 to eliminate the fraction
7 = b ( subtract 25 from both sides )
Ответ:
$45/3 hours = $15/hour
(b) To see how much Louis makes per hour, simply plug in 1 for the hours value x:
y = 12(1 hours)
y = $12/hour
Thus Carl makes more than Louis.
(c) The equation of Carl's dollars per hour is similar to Louis':
y = 15x
where x is the number of hours he works and y is the number of dollars he earns. Plug in whole number values of hours for x and plot the points (x, y) on a graph.