List the intercepts and type(s) of symmetry, if any.y2 = x + 1
A. intercepts: (0, 1), (1, 0), (-1, 0)
symmetric with respect to y-axis
B. intercepts: (-1, 0), (0, 1), (0, -1)
symmetric with respect to x-axis
C. intercepts: (0, -1), (1, 0), (-1, 0)
symmetric with respect to y-axis
D. intercepts: (1, 0), (0, 1), (0, -1)
symmetric with respect to x-axis
Answer: B
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Solve the problem.Marianne is planning a shopping trip to buy birthday gifts for her son. She estimates that the total price of the items she plans to purchase will be between $350 and $400 inclusive. If sales are taxed at a rate of 8.375% in her area, what is the range of the amount of sales tax she should expect to pay on her purchases? If Marianne's budget for the shopping trip is $425, will she necessarily be able to buy all the gifts that she has planned?
A. $29.31 ? x ? $33.50, where x represents the amount of sales tax; Yes. B. $29.31 < x < $33.50, where x represents the amount of sales tax; Yes. C. $29.31 ? x ? $33.50, where x represents the amount of sales tax; No. D. $29.31 < x < $33.50, where x represents the amount of sales tax; No.
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 0.30x + 2.57 B. y = 0.30x + 4.29 C. y = 0.32x + 4.29 D. y = 0.32x + 2.57
Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. If the x-coordinate of P is positive and the y-coordinate of P is negative, then P is in Quadrant IV. 2. If AB = ?7, BC = ?3, and AC = ?10 , then A, B, and C are collinear. 3. If M(a, b) is the midpoint of for A(c, d), then B has coordinates (2a–c, 2b–d). 4. If the slopes of two different lines are undefined, then the lines are parallel. 5. If the slope of a line is m, then the slope of any perpendicular line is -1/m.
Find the value of the expression using the given values.4
+ 5
x = 7, y = -3
A. 9 B. -13 C. 39 D. -43