Solving for Variable
Given 2x+3y=15 Solve for y
y=-2/3x+5
What is the equation for direct variation?
y=kx
What is the equation for inverse variation?
y=k/x
Translate 6 times a number increased by 7
6x+7
What is Ms. Stefancin's favorite candy bar?
Twix
X=-1/2y+5/2
if y varies directly as x, and y = 6 when x = 2, find the constant of variation
k=3
if y varies inversely as x, and y = 6 when x = 2, find the constant of variation.
k=12
Translate: x plus 6 is 12
X+6=12
What is Ms. Stefancin's dog's name?
Bentley
4x+8y=10 Solve for y when x=2
y=1/4
If x varies directly as y, and x = 9 when y = 6, find x when y = 15.
k=2/3 and x=45/2
If x varies inverse as y, and x = 7 when y = 3, find y when x = 9
k=21 and y=7/3
Translate: 2 times a number decreased by 2 is 10
2x-2=10
Where is Ms. Stefancin originally from?
Mentor, Ohio
15x-20y=? Solve when x=3 and y=8
-115
If p varies directly as the square of q, and p = 20 when q = 5, find p when q = 8
k=4/5 and p=180
If r varies directly as the cube of s, and r = 5 when s = 3, find r when s = 2.
k=135 and r=135/8
Translate: 4 times a number increased by 8 is 5 times a number decreased by 3
4x+8=5x-3
What sport does Ms. Stefancin coach here at NRHS?
Girl's Basketball
y=30x+5 Solve for x when y=95
If c varies directly as the square root of d, and c = 6 when d = 256, find c when d = 625.
k=3/8 and c=75/8
If a varies inversely as square root of b, and a = 7 when b = 36, find a when b = 289
k=42 and a=42/17
3x/4=6x+9
Where did Ms. Stefancin travel to do her student teaching?
Ireland