algebraic substitution

The point (1,5) is a solution to the equation 2y - x = 9 Yes, because: 2(5) - 1 ? 9 10 - 1 ? 9 9 = 9

If x=5 and y=6-x, what does y equal? For x = 5, we have: y = 6 - 5 y = 1

If f(x) = ax^2 + bx + c and f(0) = 1 and f(-1) = 3, what is a - b Evaluate f(0) f(0) = a(0^2) + b(0) + c f(0) = a(0) + b(0) + c f(0) = c Since f(0) = 1, we have c = 1 Evaluate f(-1) f(-1) = a(-1^2) + b(-1) + c f(-1) = a(1) - b + c f(-1) = a - b + c Since f(-1) = 3, we have: a - b + c = -3...

if a=3, then find the value of 30-5a. Using our algebraic substitution calculator, we get: a = 15

If c=3 and d=4 evaluate cd divided by 2 cd = 3(4) cd = 12 Divide this by 2: 12/2 6

Substitute the given values into given formula and solve for the unknown variable. S = 4LW + 2 WH; S= 144, L= 8, W= 4. H= S = 4LW + 2 WH Substituting our given values, we have: 144 = 4(8)(4) + 2(4)H 144 = 128 + 8H Using our equation calculator, we get: H = 2

Substitute s for x 7(s) = 7s