59 is D because with the point (-3,7) you substitute it into the equation, making it: 7=4x+b. solve for b. then you have y=4x+19. work out the algebra in the possible choices and whatever equals y=4x+19 will be the answer. in this case, its D.
60 is C same as above, you do the algebra of the equation. bring the one over after doing distribution with the 4 and voila!
61 is A a relatively easy one, all you do is the the slope -4 where m goes, and 3 where b goes. y= -4x+3
62 is C. this one requires more work. chose one of the points, in this case (2,7) and put them into the equation. but wait, you need a slope! you get that use the formula (y2-y1)/(x2-x1) which will be (7-5)/(2-3) which will be -2. now you have y-7= -2(x-2) voila!
63 is C. y= 1/2x+3
64 is B. (3, -5)
66 is B. negative. the line goes \ ( not / which is positive)
67 would be A. because it is positive and the I and the E are in the right places.
70 is C. 2/3. as before, remember we can but the points into this equation and have (6-4)/(3-0) which = 2/3
