Identify the equation of the graph shown.
A)y = 2x + 3
B)y = 2x - 3
C)y = -2x + 3
D)y = -2x - 3
Tammy knows that the factors of a polynomial are ƒ(x) = (x - 2)(x - 1)(x + 4) and the solutions are x = -4, 1, and 2. Which graph models the polynomial?
A)
B)
C)
D)
The first one is easy....the slope is negative and the y intercept is 3
In the form y = mx + b, m is the slope and b is the y intercept
So... the equation y = -2x + 3 is the only one with a negative slope and a y intercept of 3
For the second...if -4, 1 and 2 are solutions to 0 = (x + 4)(x - 1)(x - 2)......so the graph intercepts the x axis at x = -4, x = -1 and x = 2
"D" looks to be correct