Solve.If y varies directly as x, and y = 3 when x = 4, find y when x = 16.
A. 
B. 
C. 12
D. 
Answer: C
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Provide an appropriate response. Solve the following using a constant of variation:A berry picker can pick at the rate of one crate every 6 minutes. How many helpers working at the same rate would the berry picker need to get a crate every 3 minutes?
A. 1 B. 2 C. 3 D. 4
Match the graph with its correct equation (m and b are constants).
A. y = mx, m > 0 B. y = b, b < 0 C. x = h, h < 0 D. y = mx + b, m < 0 and b > 0
Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function domain: all real numbers range: {y|y = 2 or y = -6} intercept: (0, -6) symmetry: none B. function domain: all real numbers range: all real numbers intercept: (0, -6) symmetry: none C. function domain: {x|x = 2 or x = -6} range: all real numbers intercept: (-6, 0) symmetry: x-axis D. not a function
Write the quadratic function in the form y = a(x - h)2 + k.y = x2 - 6x
A. y = (x + 3)2 - 3 B. y = (x + 6)2 - 6 C. y = (x - 3)2 - 9 D. y = (x - 6)2 - 36