Question 1 (2 points) (07.06)

Which graph models the function f(x) = -4(2)x? (2 points)

a
exponential function going through point 0 4 and ending up on the right

b
exponential function going through point 0 negative four and ending up on the right

c
exponential function going through point 0 negative four and ending down on the right

d
exponential function going through point 0 4 and ending down on the right

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.