[Video] Q7: In the xy-plane, the graph of which of the following equations is a line with a slope of 3 ?

Explanation for Question 7 From the Math (Calc) Section on the Official Sat Practice Test 8

So question number seven tells us the, in an X, 2 Y plane, the graph of which of the following equations would have a slope 3 of three. If we think about Y intercept forms, 4 which is Y equals M X plus B, 5 we know the M is what is actually our slope. 6 So if we're looking for a line with a slope of three, 7 then we want the number on, in front of the X, 8 the coefficient on X to be three. Now, 9 if we look at a it's one third, right? And one third is not 10 the same as three. So a is no good. 11 If we look at B the coefficient on X is one, 12 which is also not three, so B's not right now. 13 See the coefficient on X is three, which is indicating a slope of three. 14 So this could be right. And finally D would have a slope of six 15 because the coefficient on X is six. So D is also wrong. 16 And that leaves us with our correct answer as C.