#### 题目列表

In the x*y-coordinate system, line k passes through points (-5*m, 0) and (0, 2*m). Which of the following is a possible equation of line k?
In the x*y-coordinate system, line k has slope $\frac{1}{2}$ and passes through point (0, 5). Which of the following points cannot lie on line k?
Line k is in the rectangular coordinate system. If line k is defined by the equation 3*y = 2*x + 6, and line k intersects the x-axis at point (a,b), then what is the value of a?
In the x*y-coordinate system, points (2, 9) and (-1, 0) lie on line k. If the point (n, 21) lies on line k, what is the value of n?
If a triangle in the x*y-coordinate system has vertices at (-2 , -3), (4, -3) and (28, 7), what is the area of the triangle?
If the line passes through the origin, what is the value of k? Point A in the x*y-coordinate system is shown below. Given two other points B (4a, b) and C (2a, 5b), what is the area of triangle ABC in terms of a and b? What is the y-intercept of the graph of the equation y=2*|4*x-4|-10?

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What are the x-intercepts of the parabola defined by the equation $y =2·x^2–8·x –90$? Indicate all x-intercepts.
If $\frac{(3x)}{2}$ = y, and 2 - 3y = y + 2, then x =
If 4*x = 14 and x*y = 1 then y =
If x $\neq$ 2.5 and 2*x = |15 - 4*x|, then x =
If 2*x - y = 10 and $\frac{x}{y} = 3$, then x =
If x is a number such that $x^2 + 2·x - 24 = 0 and x^2 + 5·x - 6 = 0$, then x =
If $\frac{x}{3} + \frac{x}{4} + 15 = x$, then x =
If $x \neq -2, x \neq 7 and \frac{(x-3)}{(x+2)} =\frac{(x+3)}{(x-7)}$
Which of the following is equivalent to If$2·x^{2}+8·x-24\over2·x^{2}+20·x-48$ for all values of x for which both expressions are defined?
If $x^2 - y^2 = 12$ and x - y = 4, then x =
If x is a positive integer and x+2 is divisible by 10, what is the remainder when $x^2+4·x+9$ is divided by 10?
If 2*x - 3*y = 6, then 6*y - 4*x =

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