Mathematics > QUESTIONS & ANSWERS > ACT Math Formulas(Math formulas for problems found on the SAT and ACT. While the SAT lists many of t (All)
Distance Formula Correct Answer: d=√(x₁-x₂)² + (y₁-y₂)² (EX: Find distance between (5,6) and (1,3) √(5-1)² + (6-3)²= √(4)² + (3)²= √16 + 9= √25= 5=Distance Slope Correct... Answer: Slope= Rise/Run=Change in Y/Change in X (y₂-y₁/x₁-x₂) (EX: Find slope of (5,6) and (1,3) 6-3/5-(-1)= 3/6= 1/2 Slope Intercept Correct Answer: y=mx+b Ex: y=2/3x + 5 Midpoint Formula Correct Answer: (x₁+x₂)/2, (y₁+y₂)/2 PEDMAS Correct Answer: Parenthesis, Exponents, Multiplication, Division, Add, Subtract. EX: 9-2 x (5-3)² + 6÷3= 9-2 x (2)² + 6÷3= 9-2 x (4) +6÷3= 9-8 +2= 9-6= 3 Quadratic Equation Correct Answer: ax²+bx+c= 0 EX: x²+ 9x+ 18=0 Quadratic Formula Correct Answer: ²x = −b ± √b²-4ac/2a [Show More]
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