5272道题目5525 条题源记录 · 相同内容已合并
方程组与方程解的个数进阶
How many solutions does the equation 7x + 11 = 4x + 3x + 12 have?
原库参考解析
方程组与方程解的个数挑战
x+6y=-14
5x+ 30y=0
2x+12y=39
The given equations are graphed in the xy-plane. How many solutions (x, y) does the system of three equations have?
原库参考解析
方程组与方程解的个数进阶
2x + 5y = 3
8x + 20y = 12
For each real number r, which of the following points lies on the graph of each equation in the xy-plane for the given system?
原库参考解析
方程组与方程解的个数进阶
78x + 65 = r(6x +5 )
In the given equation, r is a positive integer. If this equation has more than one solution, what is the value of r?
原库参考解析
方程组与方程解的个数挑战
31(x - n)=31y＋31n
One of the equations in a system of two linear equations is given, where n is a positive constant. The system has no solution. Which equation could be the second equation in this system?
原库参考解析
方程组与方程解的个数进阶
\( y=\frac{3}{8}x+2 \)
One of two equations in a system of linear equations is given. The system has infinitely many solutions. What is the slope of the graph of the second equation?
原库参考解析
方程组与方程解的个数挑战
Which equation has no solution?
原库参考解析
方程组与方程解的个数进阶
\( y=\frac{2}{9}x+8 \)
One of two equations in a system of linear equations is given. The system has infinitely many solutions. What is the slope of the graph of the second equation?
原库参考解析
方程组与方程解的个数挑战
\( \frac{8\left(cx+3\right)}{5}=4x-3 \)
In the given equation, c is a constant.If the equation has no solution, what is the value of c?
原库参考解析
方程组与方程解的个数进阶
\( y=4x+4 \)
\( y=4x-6 \)
At how many points do the graphs of the given equations intersect in the xy-plane?
原库参考解析
方程组与方程解的个数进阶
\( x\left(r-8\right)+5=18x+26 \)
In the given equation, r is a positive integer. If the given equation has exactly one solution, what CANNOT be the value of r?
原库参考解析
方程组与方程解的个数进阶
\( -3x+6rx=42 \)
In the given equation, r is a constant. The equation has no solution. What is the value of r?
原库参考解析
