Question

Find the unknown coordinate so that each ordered pair satisfies the equation

negative 3 x equals 8 y plus 3−3x=8y+3.

a. left parenthesis question mark comma negative three eighths right parenthesis?,−38

b. left parenthesis negative 2 comma question mark right parenthesis(−2,?)

a. Find the unknown coordinate.

left parenthesis nothing comma negative three eighths right parenthesis,−38

​(Type an integer or a simplified​ fraction.)

 

Answer 1

(a) (?,-⅜): we need x when y=-⅜. -3x=8(-⅜)+3=0 so x=0: (0,-⅜)

(b) (-2,?): we need y when x=-2. -3(-2)=8y+3, 6=8y+3, 3=8y, y=⅜: (-2,⅜)