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Natalka [10]
4 years ago
15

What equation in slope intercept form represents the line that passes through the two points 2,5 (9,2

Mathematics
1 answer:
vredina [299]4 years ago
8 0
General\ equation\ for\ line\ in\ slope\ intercept\ form:\\\\y=ax+b\\\\To\ find\ a\ and\ b\ substitude\ points\ (2,5),\ (9,2)\ into\ equation\\\\  \left \{ {{5=2a+b} \atop {2=9a+b}} \right. \\\\b=5-2a\ \ \ \ \ \ \ \ \ \ \ \ |from\ first\ equation\\\\2=9a+5-2a\ \ \ \ \ |substituting\ to\ the\ second\\2-5=7a\\7a=-3\\a=-\frac{3}{7}\\\\b=5-2\cdot(-\frac{3}{7})\\b=5+\frac{6}{7}=5\frac{6}{7}\\\\y=-\frac{3}{7}+5\frac{6}{7}
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3 years ago
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Schach [20]

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2 1/10

Step-by-step explanation:

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6 0
3 years ago
Greg is 3 years older than Kevin. In seven years, the sum of their ages will be 41. How old is each now ?
Artist 52 [7]

Let their ages be g and k.  Then g = k + 3.

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Substituting k + 3 for g in the above equation, we get  k + 3 + 7 + k + 7 = 41.

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Kevin is 12 years old and Greg is 15 years.

3 0
3 years ago
Evaluate the expression.<br><br> 2.15(3)2=
Elina [12.6K]

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Complete the diagram to find 430 percent of 90
ludmilkaskok [199]

The easiest way to find percent is to make the percent into a decimal and multiply. Move the decimal to places to the left to make 4.30, and multiplied by 90 equals 387, so 430 percent of 90 is 387.

3 0
4 years ago
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