Question

PQ is a straight line of 13 units. If P has the coordinates (5,-3) and Q has the coordinates (-7,y) find the value of y
Plzzz answer

Answer 1

use slope formula, after that put the values in the variables and you may get your answer

Answer 2

here your answer .

step by step explanation.

given, PQ = 13 units

here we, apply distance formula

PQ = √(X2-X1)² + (y2-y1)²

squaring on both side.

PQ²=(X2-X1)² + (Y2-Y1)²

13² = (-7 - 5)² + (y- -3)²

169= 144 + y²+9-6y

y²+9-6y + 144 - 169 = 0

y²-6y-16 = 0

y²-8y+2y-16 = 0

y(y-8)+2(y-8)

(y-8) (y+2)

y = 8 or y = -2

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