Tomas wrote the equation y = 3x +y equals 3 x plus startfraction 3 over 4 endfraction.. when sandra wrote her equation, they discovered that her equation had all the same solutions as tomas's equation. which equation could be sandra's? –6x + y = negative 6 x plus y equals startfraction 3 over 2 endfraction. 6x + y = 6 x plus y equals startfraction 3 over 2 endfraction. –6x + 2y = negative 6 x plus 2 y equals startfraction 3 over 2 endfraction. 6x + 2y = 6 x plus 2 y equals startfraction 3 over 2 endfraction.

a 10 percent increase

i believe the answer is letter c) 8

step-by-step explanation:

a. do i have the cash i need for down payment?

b. do i want to use my savings instead of credit?

c. can i afford the car?

d. can i use the credit in a better way?

e. could i put off buying the car for a while?

f. what will happen if i don't buy it now?

g. what are the costs of using credit?

hope this (:

(a) x intercepts: -6 and 2

you can obtain these by solving the equation 0=x^2 +4x-12 using your favorite quadratic formula. but it is easy to verify -6 and 2 indeed satisfy this equation.

(b) y intercept: -12

this is obtained by setting x=0: 0^2+4*0-12 = -12

(c) the minimum value is: -16 (this is the vertex)

you can get the vertex by rewriting the equation into the form:

there is no global or local maximum as the function goes to infinity, so only in the limit sense: +infinity.