## PrincessInsainty Group Title can someone help me in math? 1. Suppose y varies directly with x and y = 14 when x = –4. What is the value of y when x = –6? (1 point) –21 10 18 21 2. Suppose y varies directly with x and y = 25 when x = 140. What is the value of x when y = 36? (1 point) 140 165 201.6 176 3. The point (12, 9) is included in a direct variation. What is the constant of variation? (1 point) 1/2 3/4 1 2 2 years ago 2 years ago

1. Harkirat Group Title

In case of direct variation, x x1 x2 x3 --- = constant, so ----- = ------ = ------ y y1 y2 y3 i) y = 14 when x = –4. What is the value of y when x = –6? (1 point) -4 -6 so ----- = ------ 14 ? -4* ? = -6 * 14 ? = -84/-4 = 21 so when x = -6, y is 21.

2. Harkirat Group Title

2. Suppose y varies directly with x and y = 25 when x = 140. What is the value of x when y = 36? 140 ? so ------ = ------ 25 36 140 * 36 = ? * 25 5040/25 = ? 201.6 = ? so when y=36, then x=201.6

3. Harkirat Group Title

3. The point (12, 9) is included in a direct variation. What is the constant of variation? x y 9 3 constant = ----- or ----- = ------ = ---- y x 12 4 so constant is 3/4