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Digital SAT Algebra: linear equations, functions, systems and inequalities quiz quiz

9questions. Pick an answer and you'll see why right away.

  1. Solve 3(x+2)=x+143(x + 2) = x + 14 for xx.

  2. For what value of cc does 4(x−c)=4x−204(x - c) = 4x - 20 have infinitely many solutions?

  3. If f(x)=−2x+7f(x) = -2x + 7, what is f(5)f(5)?

  4. A line passes through (0,−4)(0, -4) and (3,5)(3, 5). What is its slope?

  5. What is the slope of a line parallel to y=−23x+1y = -\frac{2}{3}x + 1?

  6. The line 2x+5y=202x + 5y = 20 crosses the x-axis at which value of xx?

  7. Solve the system {y=2x−1y=−x+8\begin{cases} y = 2x - 1 \\ y = -x + 8 \end{cases} for xx.

  8. For what value of kk does {y=kx+2y=4x−3\begin{cases} y = kx + 2 \\ y = 4x - 3 \end{cases} have no solution?

  9. Solve the inequality −5x+2≤17-5x + 2 \le 17.