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Nutka1998 [239]
3 years ago
7

Which set of points contains the solutions to the equation y = –4⁄3x – 7⁄3?

Mathematics
1 answer:
bogdanovich [222]3 years ago
4 0

Answer:

C. {(2,–5), (5,–9), (29,–41)}

Step-by-step explanation:

we have

y=-\frac{4}{3}x-\frac{7}{3}

The slope of the given line is m=-\frac{4}{3}

we know that

If a set of ordered pairs is a solution of the given line

then

the slope between two points of the set must be equal to m=-\frac{4}{3}

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

<em>Verify each case</em>

case A) {(3,–19), (2,3), (8,26)}

m=\frac{26-3}{8-2}

m=\frac{23}{6}

so

\frac{23}{6}\neq-\frac{4}{3}

The set of case A) is not a solution of the given line

case B) {(–3,–17), (4,11), (3,19)}

m=\frac{19-11}{3-4}

m=-8

so

-8\neq-\frac{4}{3}

The set of case B) is not a solution of the given line

case C) {(2,–5), (5,–9), (29,–41)}

m=\frac{-9+5}{5-2}

m=-\frac{4}{3}

so

-\frac{4}{3}=-\frac{4}{3} ----> is true

Verify if the third point satisfy the equation of the given line

(29,–41)

-41=-\frac{4}{3}(29)-\frac{7}{3}

-41*3=-123

-123=-123 ------> is true

therefore

The set of case C) is a solution of the given line

case D)  {(–2,–18), (9,–61), (5,15)}

m=\frac{15+61}{5-9}

m=-\frac{76}{4}

m=-19

so

-19\neq-\frac{4}{3}

The set of case D) is not a solution of the given line

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