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Setler [38]
3 years ago
15

In 4 years time a mother will be three times as old as her son. Four years ago she was five times as old as her son. Find their

present ages.
Mathematics
1 answer:
borishaifa [10]3 years ago
4 0
Son is 12, mother is 44
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Answer:

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Step-by-step explanation:

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We can use the first (x, y) pair as a point to use in the point-slope form of the equation of a line. That form can be written, for slope m and point (h, k) ...

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using m = -4 and (h, k) = (1, -2), we can fill in the numbers to get ...

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<em>Alternate approach</em>

After you recognize that a change in x of 1 gives a change in y of -4, you can work backward one step to find the table value for y corresponding to x=0. That will be -2+4 = +2. Now, you know both the slope (-4) and the y-intercept (+2), so you can write the equation directly from this knowledge:

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