ACT Math 3.4 Intermediate Algebra
ACT Math: Intermediate Algebra Drill 3, Problem 4. Solve this system.
|ACT Math||Intermediate Algebra|
|ACT Mathematics||Intermediate Algebra|
|Algebra||Systems of Equations|
|Foreign Language||Arabic Subtitled|
|Intermediate Algebra||Systems of equations|
|Product Type||ACT Math|
Okay, so what is this question asking?
Well, it's another substitution problem like Equal
and Nutrasweet, but this one is a total trick question.
If we multiply the bottom equation by four...
...we get 4x equals twelve plus three y.
Subtract 3y from both sides and uh...look familiar?
Yeah they are totally the same equation twinsies.
So what does that mean? Well let's think about it. Whenever asked to find a
solution of two equations
we're really trying to find the point of intersection of the two lines
if the two given lines are exactly the same which they are in this case
that means they intersect each other everywhere
or at all real numbers. So the correct answer is D.
Too bad Mr. Smith would have given us a gold star. Sniff sniff.