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KengaRu [80]
3 years ago
12

Given the point (5, 6) and the slope of 5, find y when x = 21.

Mathematics
2 answers:
Darina [25.2K]3 years ago
6 0
Y = mx + b....(5,6)
slope(m) = 5
now we sub
6 = 5(5) + b
6 = 25 + b
6 - 25 = b
- 19 = b

so ur equation is : y = 5x - 19...now we sub in 21 for x
y = 5(21) - 19
y = 105 - 19
y = 86

so when x = 21, y = 86
Maurinko [17]3 years ago
3 0
Determine the equation of the line using the given slope and point by,
                            y - y1 = m(x - x1)
Substitute the values,
                           y - 6 = 5(x - 5)
Simplifying the equation,
                             y = 5x - 19
Substituting the given value of x given,
                             y = 5(21) - 19 = 86
Therefore, the answer is 86.
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We need to determinate who doesn't use anything, so first we must know the real number of who are practising: a person can do more things.

For doing this, is better use a three-circles graphic, but we try to do without it.

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16 + 22 + 15 + 17 + 12 + 9 + 8 = 99

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So only 1/100 doesn't use nothing

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