Answer:
y=-2
Step-by-step explanation:
The formula for inverse variation is
xy =k
if y=7 when x=-2, we can substitute these numbers in to find k
(-2)(7) =k
-14 =k
The equation becomes
xy = -14
Let x =7
7y = -14
Divide each side by 7
7y/7 = -14/7
y = -2
Answer:
(-8, 0), (0,0) and (7, 0)
Step-by-step explanation:
When f(x) = 0 the curve of f(x) intercept x-axis, that is, y = 0. This points are called roots or zeros of the polynomial.
From the picture, we can see that f(x) = 0 at points (-8, 0), (0,0) and (7, 0)
The original formula is y=kx. k is the constant. That means the constant is 0.2.
Answer:
Infinite number of solutions.
Step-by-step explanation:
Y=5x+1
-5x+Y=1
substitute value of y in first equation (5x+1) into 2nd equation
-5x+5x+1=1
0+1=1
1=1
since answer equals on both sides of the equatio, the answer is determined to be infinite.