Which of the following describes the graph of the equation (x+y)2=x2+y2?A.the empty setB.one pointC.two linesD.a circleE.the entire plane 答案 CExpanding the left side, we have x2+2xy+y2=x2+y2⇒2xy=0⇒xy=0⇒x=0 or y=0.Thus there are two lines described in this gr...
A: It does not intersect the x-axis. B: It intersects the x-axis in two distinct points that have rational coordinates. C: It intersects the x-axis in two distinct points that have irrational coordinates. D: It is tangent to the x-axis. ...
百度试题 结果1 题目【题目】Which equation represents the graph? (A.y=0B.y=2xC.x=2D.y=2 相关知识点: 试题来源: 解析 【解析】D 反馈 收藏
百度试题 结果1 题目Which of the following could be the equation of the graph? ( ) A. y=x-1 B. y=x^2-1 C. y=(x-1)^2 D. y=(x+1)^2 E. y=x^2 相关知识点: 试题来源: 解析 B 反馈 收藏
百度试题 结果1 题目Which equation represents the graph? ( )A. $y=0$B. $y=2x$C. $x=2$D. $y=2$ 相关知识点: 试题来源: 解析 D 反馈 收藏
百度试题 结果1 题目Which graph represents the equation y=2x+3?10.950 a. Line S Line Q c. Line P d. Line R 相关知识点: 试题来源: 解析 b. 反馈 收藏
Which is a possible equation for the provided graph? ( ) A. f(x)= (3(x^2-x-6))(x^2-5x-6) B. f(x)= (x^2-x-6)(x^2-5x-6) C. f(x)= (x^2-x-6)(x^2-5x-6) D. f(x)= ((x+3)(x-2))((x+5)(x-1)) 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
You need an equation that results in a hyperbola that opens vertically. Choices (A) and (B) describe parabolas and would give you only half of what you need ((A) could be the part of the graph above the -axis, but not below; (B) could be the part of the graph below the -axis...
23. The graph of the polynomial equation y=a(t) is shown BELOW. Which of the following must be true?y D→y A. The leading coefficient is positive. B. The sum of the distinct t intercepts is negative. C. The constant coefficient is positive. D. The product of the distinct t interce...
Any straight line parallel to X-axis in negative direction of Y-axis is given by y= - k, where k is the distance of the line from the X-axis. Here, k=3. Therefore, the equation of the line is y= - 3. To draw the graph of this equation , plot the poi