ACT Math 4.3 Intermediate Algebra
ACT Math: Intermediate Algebra Drill 4, Problem 3. Which equation has an x intercept at 1?
|ACT Math||Intermediate Algebra|
|ACT Mathematics||Intermediate Algebra|
|Algebra||Coordinates and Graphs|
|Elementary Algebra||Evaluation of algebraic expressions through substitution|
|Foreign Language||Arabic Subtitled|
|Intermediate Algebra||Roots of polynomials|
|Product Type||ACT Math|
has to be 0... and we are at the point 1, 0.
We can just brute force the answer by plugging in for equation A, here:
We have 1 squared which is 1... minus 3, which is negative 2... then add 4 to get positive
2, which... doesn't fit.
So A is not the droid we're looking for.
Now B. We have 1 minus 2 plus 1, which is...0.
There we go -- don't even need to bother with the others.
B's our boy.