Assignment
Active
Analyzing a Method of Factorization
Determine if Ginny factored correctly If not, explain
where she made an error
Ginny factored 6x2 - 31x - 30 as shown
1 ac = -180 and b = 31
2 36(-5) = -180 and 36 + (-5) = 31
36x2 + 36x - 5x - 30
1.6x(x + 6) - 5(x + 6)
5 (x+6)(6x - 5)
Ginny made a mistake in step 1 when she identified
b = 31. It should be b= -31
Ginny was correct until step 3 when she used 36
and -5 as the coefficients of
Ginny was correct until step 4 when she incorrectly
factored the GCF from 5x - 30
Ginny factored the trinomial correctly

Look at this system of equations. -3x + 3y = 12 y = x + 4 the solution set of this system is best explained by which of these statements? a) the graphs of the equations are the same line because the equations have the same slope and the same y-intercept. the system has infinitely many solutions. b) the graphs of the equations are parallel lines because they have the same slope but different y-intercepts. the system has no solution. c) the graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. the system has exactly one solution. d) the graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. the system has exactly one solution.